Natural gas conveying heat preservation pipeline

Abstract

The utility model provides a natural gas transportation thermal insulation pipeline, which relates to the technical field of natural gas transportation and comprises a transportation pipe, a thermal insulation layer is arranged on the outer side of the transportation pipe, a sound insulation layer is arranged on the outer side of the thermal insulation layer, a protective layer is arranged on the outer side of the sound insulation layer, and a plurality of protective shells are clamped at the upper end and the lower end of the outer side of the protective layer. Connecting mechanisms are installed between the protective shells close to each other. The heat preservation performance is improved through the heat preservation layer, noise generated during transportation is reduced through the sound insulation layer, the sound insulation layer and the heat preservation layer are preliminarily protected through the protection layer, then a user installs the protection shell through the connecting mechanism, the protection shell is divided into multiple sections through the connecting mechanism, and therefore when the protection shell expands with heat and contracts with cold, the heat preservation performance is improved. When rainwater extends to the gap of the protective shell to flow, the rainwater is prevented from entering the space between the protective shell and the protective layer through blockage of the protective layer, and the overall service life can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas transportation, in particular to a natural gas transportation insulation pipeline. Background Art

[0002] A natural gas transmission pipeline is a pipeline that transports natural gas from a mining site or processing plant to a city gas distribution center or industrial enterprise user. When transporting natural gas through a pipeline, the pipeline often needs to be insulated to reduce energy loss and extend the pipeline's service life. However, due to the existing insulation method of natural gas pipelines, the outer surface of the inner tube for natural gas transportation is wrapped with an insulation layer, and then the two half-tube shells are combined into a circular tube and sleeved on the outer surface of the pipeline. After long-term use, the thermal expansion and contraction effect of the pipeline can easily cause a gap to appear between the two half-tube shells. Since most natural gas pipelines are located in outdoor places, rainwater will penetrate into the insulation layer through the gaps in the outer shell, affecting the insulation effect, resulting in a significant reduction in the insulation effect and failing to meet people's usage needs. Therefore, we propose an insulated natural gas transmission pipeline to solve the above problem. Utility Model Content

[0003] The main purpose of the utility model is to provide an insulated natural gas transmission pipeline, which solves the problem that due to the existing insulation method of natural gas pipelines, the outer surface of the inner tube for natural gas transportation is wrapped with an insulation layer, and then two half-tube shells are combined into a circular tube and sleeved on the outer surface of the pipeline. After long-term use, the thermal expansion and contraction effect of the pipeline easily causes a gap to appear between the two half-tube shells. Since most natural gas pipelines are located in outdoor places, rainwater will penetrate into the insulation layer through the gaps in the outer shell, affecting the insulation effect, resulting in a significant reduction in the insulation effect and failing to meet people's usage needs.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The outer cover is fixed with a cover on the top of the protection box, and the cover is fixed with a cover on the top of the protection box to prevent the cover from leaking out.

[0006] Preferably, the connection groove is provided with a limit groove inside, and the front and rear ends of the clamping frame close to the connection groove are respectively installed with limit blocks, and the limit blocks are respectively engaged and installed inside the limit groove.

[0007] Preferably, a slide groove is provided at the inner upper end of the connecting box, and the upper ends of the splints are movably installed inside the slide grooves. Several positioning blocks are installed on the side of the splint close to the fixed block, and several positioning grooves are provided on the side of the fixed block close to the splint, and the positioning blocks are respectively snap-fitted and installed inside the positioning grooves.

[0008] Preferably, a No. 1 guide rod is respectively installed at the front and rear ends of the interior of the slide, and the rod body of the No. 1 guide rod is movably installed through the interior of the splint, and a forward and reverse screw rod is movably installed through the middle of the interior of the slide, and the rod bodies of the forward and reverse screw rods are respectively installed through the interior of the splint through threads, and a turntable is installed on one side of the connecting box, one end of the forward and reverse screw rods is connected to the turntable, and a hexagonal groove is provided on the side of the turntable away from the forward and reverse screw rods, and a hexagonal block is snap-fitted into the interior of the hexagonal groove, and a handle is installed on one side of the hexagonal block.

[0009] Preferably, a guide groove is provided on the upper surface of the connecting box and on the side close to the turntable, a pushing frame is movably installed inside the guide groove, a rotating frame is rotatably installed on the end of the pushing frame close to the turntable, and the lower end of the rotating frame and the turntable are parallel to each other, a positioning rod is installed on the side of the rotating frame close to the turntable, and a plurality of positioning holes are provided on the surface of the turntable, and the positioning rods are respectively engaged and installed inside the positioning holes.

[0010] Preferably, a No. 2 guide rod is installed inside the guide groove, and the rod body of the No. 2 guide rod is movably installed inside the pushing frame. A spring is installed on the outside of the rod body of the No. 2 guide rod located between the pushing frame and the guide groove, and drainage holes are respectively provided on the front and rear sides of the lower end of the guide groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) In the present invention, the insulation layer improves the insulation performance, the sound insulation layer reduces the noise generated during transportation, and the protective layer is used to initially protect the sound insulation layer and the insulation layer. Then, the user installs the protective shell through the connecting mechanism, so that the connecting mechanism divides the protective shell into multiple sections. When the protective shell expands and contracts with heat and cold, when rainwater flows through the gap of the protective shell, it will be blocked by the protective layer to prevent rainwater from entering between the protective shell and the protective layer. This can not only extend the overall service life, but also better protect the insulation layer.

[0013] (2) In the present invention, the protective shell is connected by a connecting mechanism, thereby dividing the protective shell into sections. When the user needs to replace the protective layer, sound insulation layer or thermal insulation layer inside, he only needs to open the protective shell of that section to complete the replacement work, thereby improving the overall replacement efficiency and making it easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a natural gas transmission insulation pipeline of the utility model;

[0015] Figure 2 This is a front view structural diagram of a natural gas transmission insulation pipeline according to the present utility model;

[0016] Figure 3 This is a side structural diagram of a natural gas transmission insulation pipeline of the present utility model;

[0017] Figure 4 This utility model is a natural gas transmission insulation pipeline Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0018] Figure 5 This utility model is a natural gas transmission insulation pipeline Figure 2 Schematic diagram of the cross-section structure at the middle BB;

[0019] Figure 6 This utility model is a natural gas transmission insulation pipeline Figure 3 The enlarged structural diagram at C in the middle;

[0020] Figure 7This utility model is a natural gas transmission insulation pipeline Figure 5 The enlarged structural diagram at D in the middle;

[0021] Figure 8 This utility model is a natural gas transmission insulation pipeline Figure 6 Enlarged structural diagram at E in the middle.

[0022] In the figure: 1. transport tube; 2. insulation layer; 3. sound insulation layer; 4. protective layer; 5. protective shell; 6. connecting mechanism; 601. connecting groove; 602. clamping frame; 603. limit groove; 604. limit block; 605. fixing block; 606. connecting box; 607. splint; 608. positioning block; 609. positioning groove; 610. slide groove; 611. forward and reverse screw rods; 612. guide rod No. 1; 613. turntable; 614. hexagonal block; 615. hexagonal groove; 616. handle; 617. guide groove; 618. pushing frame; 619. rotating frame; 620. positioning rod; 621. positioning hole; 622. guide rod No. 2; 623. spring. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 8 As shown, the embodiment of the present invention proposes a natural gas transmission insulation pipeline, including a transport pipe 1, an insulation layer 2 is provided on the outside of the transport pipe 1, a sound insulation layer 3 is provided on the outside of the insulation layer 2, a protective layer 4 is provided on the outside of the sound insulation layer 3, and a plurality of protective shells 5 are installed on the upper and lower ends of the outer side of the protective layer 4. The protective shells 5 are fitted together, and connecting mechanisms 6 are respectively installed between the protective shells 5 that are close to each other. The connecting mechanisms 6 include connecting grooves 601, which are respectively provided on the front and rear sides of the protective shells 5, and the connecting grooves 601 are respectively provided on the front and rear sides of the protective shells 5 that are close to each other. The grooves 601 are fitted together, and clamping frames 602 are respectively installed on both sides of the inner side of the connecting grooves 601 that are close to each other. The lower ends of the clamping frames 602 are connected by hinges, and the upper ends of the clamping frames 602 are respectively installed with fixing blocks 605, and the fixing blocks 605 are parallel to each other. A connection box 606 is movably installed on the upper end of the protective shell 5, and the fixing blocks 605 are respectively fitted together inside the connection box 606. Two points inside the connection box 606 are respectively movably installed with splints 607, and the splints 607 and the fixing blocks 605 are fitted together.

[0025] like Figures 6 to 8As shown, in another embodiment of the present invention, the interior of the connecting groove 601 is respectively provided with a limiting groove 603, and the front and rear ends of the clamping frame 602 close to the connecting groove 601 are respectively installed with limiting blocks 604, and the limiting blocks 604 are respectively engaged and installed in the interior of the limiting groove 603. The upper end of the interior of the connecting box 606 is provided with a slide groove 610, and the upper ends of the splints 607 are respectively movably installed in the interior of the slide groove 610. A plurality of positioning blocks 608 are respectively installed on one side of the splint 607 close to the fixed block 605, and the fixed block 605 is close to one side of the splint 607. The sides are respectively provided with a plurality of positioning grooves 609, and the positioning blocks 608 are respectively engaged and installed in the interior of the positioning grooves 609. The front and rear ends of the interior of the slide 610 are respectively installed with a No. 1 guide rod 612, and the rod body of the No. 1 guide rod 612 is respectively movably penetrated and installed in the interior of the splint 607. The middle of the interior of the slide 610 is movably penetrated and installed with a positive and negative screw rod 611. The rod body of the positive and negative screw rod 611 is respectively installed in the interior of the splint 607 through a thread. A turntable 613 is installed on one side of the connecting box 606, and one end of the positive and negative screw rod 611 is connected to the turntable 613. 3 phase connection, the turntable 613 is provided with a hexagonal groove 615 on the side away from the forward and reverse screw rods 611, the inner hexagonal groove 615 is engaged with a hexagonal block 614, and a handle 616 is installed on one side of the hexagonal block 614. A guide groove 617 is provided on the upper surface of the connecting box 606 and on the side close to the turntable 613. A push frame 618 is movably installed inside the guide groove 617. A rotating frame 619 is rotatably installed on one end of the push frame 618 close to the turntable 613, and the lower end of the rotating frame 619 is parallel to the turntable 613. A positioning rod 620 is installed on the side of the frame 619 close to the turntable 613, and a plurality of positioning holes 621 are provided on the surface of the turntable 613. The positioning rods 620 are respectively engaged and installed in the inside of the positioning holes 621. A No. 2 guide rod 622 is installed in the inside of the guide groove 617. The rod body of the No. 2 guide rod 622 is movably installed in the inside of the pushing frame 618. A spring 623 is installed on the outside of the rod body of the No. 2 guide rod 622 located between the pushing frame 618 and the guide groove 617. Drainage holes are respectively provided on the front and rear sides of the lower end of the guide groove 617.

[0026] The user installs the heat-insulating layer 2, the sound-insulating layer 3 and the protective layer 4 on the outside of the transport tube 1 respectively, and then the user can snap-fit ​​and install the protective shell 5 inside the protective layer 4 respectively, so that the inner wall of the protective layer 4 and the protective shell 5 fit together, and also make the protective shells 5 fit together. Then, after the protective shell 5 drives the connecting groove 601 to fit together, the user can put the clamping frame 602 inside the connecting groove 601 that fits together, and then close it through the hinge, so that the clamping frame 602 is initially snapped into the connection. The protective shell 5 is positioned in the groove 601, and then the user installs the connection box 606 on the upper end of the fixed block 605, so that the fixed block 605 enters the connection box 606 and is parallel to the clamping plate 607. Then the user drives the inner hexagon block 614 to snap into the inner hexagon groove 615 through the handle 616, and then rotates the handle 616, so that the handle 616 drives the forward and reverse screw rods 611 to rotate through the inner hexagon block 614 and the inner hexagon groove 615, so that the forward and reverse screw rods 611 can rotate. 1 pushes the clamping plate 607 to move relative to each other, so that the clamping plate 607 pushes the fixed block 605, so that the fixed block 605 drives the clamping frame 602 to move relative to each other, thereby further improving the clamping force of the clamping frame 602. Then, after the clamping plate 607 completes the clamping, the user can control the rotating frame 619 to pull the pushing frame 618, so that the pushing frame 618 squeezes the spring 623. Then, after the rotating frame 619 drives the positioning rod 620 to move to the side of the turntable 613, the rotating frame 602 can be moved to the side of the turntable 613. 19 is rotated to allow the rotating frame 619 to drive the positioning rod 620 and the positioning hole 621 to be parallel. Then the user can loosen the rotating frame 619 and allow the spring 623 to push the pushing frame 618 and the rotating frame 619, so that the rotating frame 619 drives the positioning rod 620 to be inserted into the interior of the positioning hole 621 to achieve the positioning of the turntable 613. Then the user can remove the handle 616 and the hexagonal block 614 to complete the assembly work, and then repeat the above steps to continuously install the protective shell 5.

[0027] The limiting block 604 and the limiting groove 603 are used to increase the connectivity between the clamping frame 602 and the protective shell 5 to prevent the protective shell 5 from falling off.

[0028] The second guide rod 622 is used to position the push frame 618 to prevent it from falling, and is also used to provide positional support for the spring 623, so that the spring 623 can stably push the push frame 618, so that the push frame 618 can stably drive the positioning rod 620 to insert into the positioning hole 621 to achieve the position limiting work of the turntable 613;

[0029] The drainage hole is used to drain rainwater from the guide groove 617 during rainy days, thereby preventing rainwater from being retained in the guide groove 617 for a long time and causing erosion.

[0030] Then, when it is necessary to disassemble a certain section of the protective shell 5, the user only needs to pull the rotating frame 619 of that section outward first, so that the rotating frame 619 drives the positioning rod 620 to disengage from the inside of the positioning hole 621. Then, after the positioning rod 620 is disengaged from the inside of the positioning hole 621, the user can control the rotating frame 619 to rotate, thereby preventing the positioning rod 620 from interfering with the rotation of the turntable 613. Then, the user inserts the hexagonal block 614 into the inside of the hexagonal groove 615 through the handle 616, and then rotates the handle 616, so that the handle 616 controls the forward and reverse screw rods 611 to rotate, and the forward and reverse screw rods 611 control the splint 607 and the fixed block 605 to separate. Then, the user can remove the connecting box 606, and then open and remove the clamping frame 602 through the hinge. After the clamping frame 602 is removed, the user can remove the protective shell 5, and then replace the thermal insulation layer 2, sound insulation layer 3 and protective layer 4 inside it.

[0031] The working principle of this natural gas transmission insulation pipeline:

[0032] When in use, the user first installs the heat-insulating layer 2, the sound-insulating layer 3 and the protective layer 4 on the outside of the transport tube 1 respectively, and then the user can snap-fit ​​and install the protective shell 5 inside the protective layer 4 respectively, so that the inner wall of the protective layer 4 and the protective shell 5 fit together, and also make the protective shells 5 fit together, and then after the protective shell 5 drives the connecting grooves 601 to fit together, the user can put the clamping frame 602 inside the connecting grooves 601 that fit together, and then close it through the hinge, so that the clamping frame 602 is initially The protective shell 5 is positioned by inserting it into the connecting groove 601, and then the user installs the connecting box 606 on the upper end of the fixing block 605, so that the fixing block 605 enters the connecting box 606 and is parallel to the clamping plate 607. Then the user drives the inner hexagon block 614 to insert it into the inner hexagon groove 615 through the handle 616, and then rotates the handle 616, so that the handle 616 drives the positive and negative screw rods 611 to rotate through the inner hexagon block 614 and the inner hexagon groove 615, so that the positive and negative screw rods 611 can rotate. The rod 611 pushes the clamping plate 607 to move relative to each other, so that the clamping plate 607 pushes the fixed block 605, so that the fixed block 605 drives the clamping frame 602 to move relative to each other, thereby further improving the clamping force of the clamping frame 602. Then, after the clamping of the clamping plate 607 is completed, the user can control the rotating frame 619 to pull the pushing frame 618, so that the pushing frame 618 squeezes the spring 623. Then, after the rotating frame 619 drives the positioning rod 620 to move to the side of the turntable 613, the rotating frame can be 619 rotates, allowing the rotating frame 619 to drive the positioning rod 620 and the positioning hole 621 to be parallel, and then the user can loosen the rotating frame 619, allowing the spring 623 to push the pushing frame 618 and the rotating frame 619, allowing the rotating frame 619 to drive the positioning rod 620 to be inserted into the interior of the positioning hole 621 to achieve the positioning of the turntable 613, and then the user can remove the handle 616 and the hexagonal block 614 to complete the assembly work, and then repeat the above steps to continuously install the protective shell 5.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A natural gas transmission insulation pipeline, comprising a transport pipe (1), characterized in that: The outer side of the transport pipe (1) is provided with a heat-insulating layer (2), the outer side of the heat-insulating layer (2) is provided with a sound-insulating layer (3), the outer side of the sound-insulating layer (3) is provided with a protective layer (4), and a plurality of protective shells (5) are mounted on the upper and lower ends of the outer side of the protective layer (4), the protective shells (5) are fitted together, and connecting mechanisms (6) are respectively installed between the protective shells (5) that are close to each other, and the connecting mechanisms (6) include connecting grooves (601), and the connecting grooves (601) are respectively provided on the front and rear sides of the protective shells (5), and the connecting grooves (601) that are close to each other are fitted together and close to each other. Clamping frames (602) are respectively mounted on both sides of the inner portion of the connecting groove (601), the lower ends of the clamping frames (602) are connected via hinges, the upper ends of the clamping frames (602) are respectively mounted with fixing blocks (605), the fixing blocks (605) are parallel to each other, a connecting box (606) is movably mounted on the upper end of the protective shell (5), the fixing blocks (605) are respectively mounted on the inner portion of the connecting box (606), and two points of the inner portion of the connecting box (606) are respectively movably mounted with splints (607), the splints (607) and the fixing blocks (605) are in contact with each other.

2. The natural gas transmission insulated pipeline according to claim 1, characterized in that: Limiting grooves (603) are respectively provided inside the connecting groove (601), and limiting blocks (604) are respectively installed at the front and rear ends of the clamping frame (602) close to the connecting groove (601), and the limiting blocks (604) are respectively engaged and installed inside the limiting grooves (603).

3. The natural gas transmission insulated pipeline according to claim 1, characterized in that: The upper end of the interior of the connection box (606) is provided with a slide groove (610), and the upper end of the clamping plate (607) is movably installed inside the slide groove (610). A plurality of positioning blocks (608) are installed on the side of the clamping plate (607) close to the fixed block (605). A plurality of positioning grooves (609) are provided on the side of the fixed block (605) close to the clamping plate (607), and the positioning blocks (608) are respectively engaged and installed inside the positioning grooves (609).

4. The natural gas transmission insulated pipeline according to claim 3, characterized in that: A guide rod (612) is installed at the front and rear ends of the interior of the slide (610), and the rod body of the guide rod (612) is movably installed in the interior of the splint (607). A forward and reverse screw rod (611) is movably installed in the middle of the interior of the slide (610), and the rod bodies of the forward and reverse screw rods (611) are respectively installed in the interior of the splint (607) through threads. A turntable (613) is installed on one side of the connection box (606), and one end of the forward and reverse screw rods (611) is connected to the turntable (613). A hexagonal groove (615) is provided on the side of the turntable (613) away from the forward and reverse screw rods (611). A hexagonal block (614) is installed in the interior of the hexagonal groove (615), and a handle (616) is installed on one side of the hexagonal block (614).

5. The natural gas transmission insulated pipeline according to claim 4, characterized in that: A guide groove (617) is provided on the upper surface of the connection box (606) and on a side close to the turntable (613); a push frame (618) is movably installed inside the guide groove (617); a rotating frame (619) is rotatably installed on one end of the push frame (618) close to the turntable (613), and the lower end of the rotating frame (619) and the turntable (613) are parallel to each other; a positioning rod (620) is installed on the side of the rotating frame (619) close to the turntable (613); a plurality of positioning holes (621) are provided on the surface of the turntable (613), and the positioning rods (620) are respectively engaged and installed inside the positioning holes (621).

6. The natural gas transmission insulated pipeline according to claim 5, characterized in that: A second guide rod (622) is installed inside the guide groove (617), and the rod body of the second guide rod (622) is movably installed inside the pushing frame (618). A spring (623) is installed on the outer side of the rod body of the second guide rod (622) located between the pushing frame (618) and the guide groove (617). Drain holes are respectively provided on the front and rear sides of the lower end of the guide groove (617).

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