Cold insulation pipe bracket and construction method

Abstract

The invention discloses a cold insulation pipe bracket and a construction method, and relates to the technical field of cold insulation pipe bracket construction.The cold insulation pipe bracket comprises two pipe clamps, a pipeline and a damp-proof layer and further comprises a supporting assembly and two clamping sets located on the two pipe clamps correspondingly, and the supporting assembly is used for supporting the two pipe clamps and adjusting the relative distance between the two pipe clamps; the clamping set comprises a clamping rod which is rotationally connected to the position, close to one side, of the top end of the pipe clamp. The bottom rod is elastically and slidably connected into the pipe clamp. The pipe clamps are supported by the supporting assemblies, so that the space postures of the two pipe clamps are stably controlled, and when the damp-proof layer is installed, the damp-proof layer can be positioned under the dual effects of clamping constraint of the bottom rod and the clamping rod and resisting force generated when the damp-proof layer stretches towards the bottom rod and the clamping rod under the toughness effect.

Description

Technical Field

[0001] The invention relates to the technical field of cold-insulation pipe support construction, in particular to a cold-insulation pipe support and a construction method. Background Art

[0002] Cold insulation pipe supports are key support devices for cryogenic piping systems and are widely used in cryogenic medium transportation pipelines such as liquefied natural gas (LNG), liquid nitrogen, and liquid oxygen, as well as cold insulation piping systems in the chemical and refrigeration industries.

[0003] In the prior art, the installation process of the moisture-proof layer and the cold-insulation layer is as follows: Figure 1 As shown in a, during construction, the cold insulation layer must first be covered on the outer surface of the pipe and solidified by gluing to form a flat base surface, and then the pipe clamp is placed on the cold insulation layer in a loose state, as shown in Figure 1 As shown in b; Since the physical properties and construction requirements of the moisture-proof layer are different from those of the cold insulation layer, it cannot be coated with the same coating process as the cold insulation layer. Instead, it must be inserted section by section through the reserved gap between the pipe clamp and the cold insulation layer. This process faces the following technical difficulties: Positioning the moisture-proof layer is difficult. The moisture-proof layer material is tough and long. After being inserted into the reserved gap, there is no temporary fixation method, and manual support is the only option, which is prone to displacement. At the same time, the edges of adjacent moisture-proof layers are prone to warping and deformation during the insertion process, requiring manual support throughout the process. However, stable positioning and installation by a single operator is difficult.

[0004] Spatial coordination is highly complex. The subsequent installation of the moisture-proof layer requires simultaneous consideration of displacement control for the existing moisture-proof layer, as well as angle and orientation adjustments between the new and old moisture-proof layers to prevent interference. Because the relaxed pipe clamp is offset from the pipe axis, operators typically need to lie supine beneath the pipe and use their feet to lift the clamp to adjust its spatial position (such as left-right inclination and vertical clearance) to create appropriate space for the moisture-proof layer installation. This process is not only time-consuming but also requires extremely high operator coordination skills, further increasing the construction difficulty. Summary of the Invention

[0005] The object of the present invention is to provide a cold-insulation pipe support and a construction method to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a cold-insulation pipe support, comprising two pipe clamps, a pipe, a moisture-proof layer, a support assembly, and two clamping groups respectively located on the two pipe clamps, wherein the support assembly is used to support the two pipe clamps and adjust the relative distance between the two pipe clamps, and the clamping groups include: The clamping rod is rotatably connected to the top of the pipe clamp near one side; The bottom rod is elastically and slidably connected to the inside of the pipe clamp; The trigger assembly is used to control the clamping rod to clamp the moisture-proof layer and control the horizontal sliding of the bottom rod. When the support assembly causes the two pipe clamps to move relative to each other to a fixed distance, the clamping rod first releases the clamping of the moisture-proof layer and then moves the bottom rod away from the moisture-proof layer to the maximum side.

[0007] As a further solution of the present invention, a resisting rod is provided on one side of the clamping rod, the resisting rod is rotatably connected to the inside of the pipe clamp, and a first torsion spring is sleeved on the rotating shaft of the resisting rod; When the trigger assembly controls the clamping rod to release the restriction on the moisture-proof layer, the resisting rod pushes the moisture-proof layer to fit onto the pipe under the action of the first torsion spring.

[0008] As a further solution of the present invention, the trigger assembly includes a driving rod, a trigger member and a through hole, the through hole is located on a side of the bottom rod away from the pipe and is opened on the pipe clamp, the bottom rod is slidably connected to the through hole, the driving rod is arc-shaped and slides inside the pipe clamp, the top of the driving rod is fixedly connected to a rack rod, the rack rod is fixedly connected to a gear, the gear rotates on the inner wall of the pipe clamp and is fixedly connected to the clamping rod, a second torsion spring is sleeved on the rotating shaft of the gear, the bottom end of the driving rod is rotatably connected to a support rod, the bottom end of the support rod is rotatably connected to a push plate, the push plate is elastically and slidably connected to the inside of the pipe clamp, the bottom rod is located on a side of the push plate away from the pipe, the trigger member is rotatably connected to a side of the push plate away from the pipe, the end of the trigger member extends to the outside of the pipe clamp and can rotate in an arc track inside the pipe clamp, a third torsion spring is sleeved on the rotating shaft of the trigger member, and a transition surface is provided on the top of the trigger member; When the support assembly drives the pipe clamp to move to a fixed distance, it pushes the trigger member to rotate.

[0009] As a further solution of the present invention, the support assembly includes two support frames connected in a relatively sliding manner, and two positioning members of different heights are provided on the support frames. The positioning members are slidably connected to the support frames, and a telescopic member is fixedly connected between the positioning members and the support frames. The positions of the two support frames corresponding to the trigger members are fixedly connected with a trigger rod; when the trigger rod contacts the trigger member, it pushes the trigger member to rotate around the rotation axis.

[0010] As a further solution of the present invention, the trigger rods on the two support frames have different heights.

[0011] As a further solution of the present invention, the two clamping rods located on both sides of the pipe clamp are staggered.

[0012] As a further solution of the present invention, the clamping rods are all L-shaped.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention stably controls the spatial posture of the two pipe clamps by supporting the pipe clamps through the support component. When installing the moisture-proof layer, the moisture-proof layer can be positioned under the dual effects of the clamping constraint of the bottom rod and the clamping rod, and the resistance force generated when the moisture-proof layer expands toward the bottom rod and the clamping rod under the action of toughness. The angles and orientations of multiple moisture-proof layers are fixed on the pipe clamp, and adjacent moisture-proof layers are initially installed on the pipe clamp with a spacing distance left as a subsequent extension space, thereby meeting spatial coordination and ensuring the stability of the subsequent installation process.

[0014] 2. The present invention, through the cooperation between the resisting rod and the first torsion spring, when the clamping rod releases the restriction on the moisture-proof layer, the moisture-proof layer can avoid the top ends overlapping with each other or the bottom end protruding from the bottom end of the pipe clamp when it expands with the bottom end as the fulcrum, thereby improving the accuracy during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagrams of the pipeline, cold insulation layer, moisture-proof layer, and pipe clamp after installation, and schematic diagrams of the pipe clamp and the cold insulation layer being eccentric after the cold insulation layer and the pipeline are bonded (Inset a and Inset b, respectively, are schematic diagrams of the pipeline, cold insulation layer, moisture-proof layer, and pipe clamp after installation, and schematic diagrams of the pipe clamp and the cold insulation layer being eccentric after the cold insulation layer and the pipeline are bonded); Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 A schematic diagram showing that the trigger levers located on the left and right sides of the present invention have different heights; Figure 4 Schematic diagram of the trigger rod of the present invention contacting the trigger member successively; Figure 5 A schematic diagram of the moisture-proof layer after the clamping rod releases the moisture-proof layer; Figure 6 This is a trajectory diagram of the moisture-proof layer of the present invention when it expands toward the right side of the top of the cold-insulating layer; Figure 7 Schematic diagram of the stress concentration area of ​​the moisture-proof layer when the resistance rod pushes back on the moisture-proof layer according to the present invention; Figure 8 A schematic diagram of the rotation trajectory of the resisting rod after the clamping rod releases the clamping of the moisture-proof layer according to the present invention; Figure 9 A schematic diagram of the present invention showing the resisting rod pushing the top of the moisture-proof layer after the clamping rod releases the clamping of the moisture-proof layer; Figure 10 Schematic diagram of the internal structure of the pipe clamp of the present invention; Figure 11 for Figure 10 A partial enlarged view of point A in the middle; Figure 12 for Figure 10A partial enlarged view of point B in the middle; Figure 13 A schematic diagram of a through hole with a rod and a threaded hole according to the present invention; Figure 14 Schematic diagram of the rotation trajectory of the trigger member after the trigger rod contacts the trigger member of the present invention; Figure 15 This is a schematic diagram of the push plate driving the bottom rod to move to the extreme side after the trigger member of the present invention is triggered; Figure 16 Schematic diagram of the support frame, positioning member and telescopic member of the present invention.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Pipe clamp; 101. Insulation layer; 2. Pipe; 3. Moisture-proof layer; 4. Clamping rod; 5. Bottom rod; 6. Resistance rod; 7. First torsion spring; 8. Drive rod; 9. Rack rod; 10. Gear; 11. Second torsion spring; 12. Support rod; 13. Push plate; 1301. Sliding rod; 14. Trigger member; 15. Third torsion spring; 16. Transition surface; 17. Support frame; 18. Positioning member; 19. Telescopic member; 20. Trigger rod; 21. Through hole; 22. First spring; 23. Second spring; 24. Insert rod; 25. Threaded hole; 26. Slot. DETAILED DESCRIPTION

[0017] See also Figures 1-16 The present invention provides a technical solution: a cold-keeping pipe support, comprising two pipe clamps 1, a pipe 2, and a moisture-proof layer 3, and also comprising a support assembly and two clamping groups respectively located on the two pipe clamps 1, the support assembly being used to support the two pipe clamps 1 and adjust the relative distance between the two pipe clamps 1, the clamping group comprising a clamping rod 4, a bottom rod 5 and a trigger assembly, the clamping rod 4 being rotatably connected to one side of the top end of the pipe clamp 1, the bottom rod 5 being slidably connected to the inside of the pipe clamp 1, a first spring 22 being fixedly connected between the bottom rod 5 and the inner wall of the pipe clamp 1, the trigger assembly being used to control the clamping rod 4 to clamp the moisture-proof layer 3 and to control the horizontal sliding of the bottom rod 5, when the support assembly causes the two pipe clamps 1 to move relative to each other to a fixed distance, the clamping rod 4 first releases the clamping of the moisture-proof layer 3 and then moves the bottom rod 5 away from the moisture-proof layer 3 to the maximum side.

[0018] like Figure 2-Figure 5 as well as Figure 10 and Figure 12 As shown: Initial work: adhere the cold insulation layer 101 to the surface of the pipe 2.

[0019] Pre-positioning work of moisture-proof layer 3: Before the two pipe clamps 1 are supported by the supporting assembly or after the supporting assembly supports the pipe clamps 1, there is a spacing L between the two pipe clamps 1 and the horizontal line P of the pipe 2, and the moisture-proof layers 3 are placed inside the clamping group respectively, and the clamping rod 4 is located on one side of the vertical line R of the center point of the pipe clamp 1. Because the distance between the bottom rod 5 and the clamping rod 4 is smaller than the distance after the moisture-proof layer 3 is extended, after the moisture-proof layer 3 is placed between the clamping rod 4 and the bottom rod 5, the moisture-proof layer 3 can be positioned under the dual effects of the clamping constraint of the bottom rod 5 and the clamping rod 4, and the resistance force generated when the moisture-proof layer 3 is stretched toward the bottom rod 5 and the clamping rod 4 under the action of toughness, so that its angle and orientation are fixed, and the moisture-proof layer 3 is preliminarily installed on the pipe clamp 1 without subsequent manual support. At this time, the four moisture-proof layers 3 can be distributed outside the cold insulation layer 101, and there is a certain distance between the adjacent moisture-proof layers 3 after being constrained by the bottom rod 5 and the clamping rod 4, thereby reserving an installation distance when the subsequent pipe clamp 1 is attached to the cold insulation layer 101 and the pipe 2; Installation work: The support assembly simultaneously drives the pipe clamp 1 located above and the pipe clamp 1 located below to move closer together. For example, the movement of the pipe clamp 1 located above toward the pipe 2, that is, the downward trend of the pipe clamp 1 above, is used as an example: The support assembly drives the pipe clamp 1 downward to move closer to the cold insulation layer 101. During the descent process, the bottom rod 5 contacts the cold insulation layer 101, pushing the bottom rod 5 to slide inside the pipe clamp 1 and compressing the first spring 22. When the pipe clamp 1 descends to a distance L3 (L3 is less than L) between the bottom end and the horizontal line P, the trigger assembly controls the clamping rod 4 to rotate so that the clamping rod 4 first releases the clamping of the moisture-proof layer 3, and then moves the bottom rod 5 away from the moisture-proof layer 3 to the maximum side. Therefore, when the trigger assembly controls the clamping rod 4 to rotate so that the clamping rod 4 releases the clamping of the moisture-proof layer 3: Because the bottom end of the moisture-proof layer 3 is on the bottom rod 5, and the movable space between the cold-insulating layer 101 and the pipe clamp 1 at this time is small, after the clamping rod 4 releases the clamping of the moisture-proof layer 3, the moisture-proof layers 3 on the left and right sides of the pipe clamp 1 will use their bottom ends as support under the effect of their own elasticity to make the top ends expand in the space L4 between the cold-insulating layer 101 and the pipe clamp 1, and then the top ends of the two moisture-proof layers 3 will contact and adhere to the cold-insulating layer 101 (as shown in FIG. Figure 5 As shown), and the bottom rod 5 is located above the horizontal line P, so the bottom ends of the two moisture-proof layers 3 cannot be at the same height as the horizontal line P, so they are not in a fully opened state, but have a small amount of toughness, but the moisture-proof layer 3 located above; Then the trigger assembly moves the bottom rod 5 away from the moisture-proof layer 3 to the maximum side. At this time: The bottom rod 5 is away from the bottom end of the moisture-proof layer 3 to the maximum extent on the left and right sides, and the bottom rod 5 is separated from the bottom end of the moisture-proof layer 3. At this time, the bottom end of the moisture-proof layer 3 loses its restriction, but because the moisture-proof layer 3 releases most of its toughness with the bottom rod 5 as a fulcrum, thereby avoiding excessive expansion to the bottom during expansion, it will not slide down to cross the horizontal line P under the action of static friction between itself and the cold insulation layer 101 and the inner wall of the pipe clamp 1, and the distance between the pipe clamp 1 located below and the horizontal line P is also L3. Therefore, when the bottom rod 5 is completely away from the moisture-proof layer 3 to the left and right sides, as the two pipe clamps 1 and the cold insulation layer 101 approach each other, the moisture-proof layer 3 is squeezed by the pipe clamp 1 and the cold insulation layer 101 and the adjacent ends of the four moisture-proof layers 3 resist each other when in contact, so that the four moisture-proof layers 3 are squeezed to completely fit with the cold insulation layer 101 and the inner wall of the pipe clamp 1, thereby completing the installation of the moisture-proof layer 3. After the moisture-proof layer 3 is installed, the pipe clamp 1 is in a fitted state. At this time, the two pipe clamps 1 can be fixed by inserting bolts into the threaded holes 25, and then the bottom support member on the pipe clamp 1 below can be bolted to the pipe support base. Then the support assembly and the pipe support base and the bottom support member are common knowledge in the prior art. Their installation and setting are common knowledge to those skilled in the art, and will not be described in detail here.

[0020] The present invention supports the pipe clamp 1 through the support component so that the spatial posture of the two pipe clamps 1 can be stably controlled. When the moisture-proof layer 3 is installed, the moisture-proof layer 3 can be positioned under the dual effects of the clamping constraint of the bottom rod 5 and the clamping rod 4, and the resistance force generated when the moisture-proof layer 3 stretches toward the bottom rod 5 and the clamping rod 4 under the action of toughness, so that the angles and orientations of multiple moisture-proof layers 3 are fixed on the pipe clamp 1, and adjacent moisture-proof layers 3 are initially installed on the pipe clamp 1 with a spacing distance left as subsequent extension space, thereby meeting spatial coordination and ensuring the stability of the subsequent installation process.

[0021] A resisting rod 6 is provided on one side of the clamping rod 4. The resisting rod 6 is rotatably connected to the inside of the pipe clamp 1. A first torsion spring 7 is sleeved on the rotating shaft of the resisting rod 6. When the trigger assembly controls the clamping rod 4 to release the restriction on the moisture-proof layer 3 , the resisting rod 6 pushes the moisture-proof layer 3 to fit onto the pipe 2 under the action of the first torsion spring 7 .

[0022] like Figure 3-Figure 4 、 Figures 9-11 As shown: When the clamping rod 4 and the bottom rod 5 initially position the moisture-proof layer 3, the moisture-proof layer 3 is bent by the resisting rod 6 and the first torsion spring 7. On the one hand, the moisture-proof layer 3 is pushed in the opposite direction and a force balance is formed, so that the bottom rod 5 and the clamping rod 4 will not bend excessively at both ends and fall away, thereby improving stability. After bending, the expansion potential of the moisture-proof layer 3 is mostly present in the area between S and S1. The purpose is: When the clamping rod 4 releases the clamping of the top of the moisture-proof layer 3, in order to prevent the moisture-proof layer 3 on the upper pipe clamp 1 from being released downward with the top as the base point when elastically releasing, causing the bottom end of the moisture-proof layer 3 to excessively extend to protrude from the bottom end of the pipe clamp 1, the expansion of the moisture-proof layer 3 at this time is released upward based on the fulcrum formed by the contact between the bottom end and the bottom rod 5. However, because the bottom end of the moisture-proof layer 3 is higher than the horizontal line P, when the moisture-proof layer 3 is expanded, its top end will move toward the vertical line R along the trajectory V, and may move to the right side of R. If this happens, it is easy to cause the two moisture-proof layers 3 on the left and right sides to be attached to the cold insulation layer 101. If the two top ends overlap, this situation will cause the bottom rod 5 to move away from the bottom end of the moisture-proof layer 3. The two moisture-proof layers 3 will continue to relax, causing the bottom ends to move to protrude below the pipe clamp 1, resulting in an excessively large distance between the top ends of the two moisture-proof layers 3. When the two subsequent pipe clamps 1 are attached, the moisture-proof layers 3 are squeezed and damaged, and the surface of the moisture-proof layers is damaged. Alternatively, after the top ends of the two moisture-proof layers 3 overlap, even if the moisture-proof layers 3 do not move excessively toward the bottom, the distance between their top ends and the cold insulation layer 101 may be too large, causing the ends to overlap when the subsequent pipe clamps 1 are attached to the cold insulation layer 101. By setting the resisting rod 6, when the clamping rod 4 releases the restriction on the moisture-proof layer 3, the moisture-proof layer 3 relaxes with the bottom end as the fulcrum, and the torsional force of the first torsion spring 7 is released, causing the resisting rod 6 to rotate and press down the position of the moisture-proof layer 3 near the top, providing a guide for the top of the moisture-proof layer 3 to move downward, and it will not move in a V trajectory, thereby causing the part between the S and S1 area surfaces to gradually move toward the position close to R, until most of its toughness is released and the tops of the two adjacent moisture-proof layers 3 are in contact without overlapping each other, so that after the bottom rod 5 is subsequently detached from the bottom end of the moisture-proof layer 3, it will not protrude from the bottom or top of the pipe clamp 1 and overlap with each other.

[0023] The trigger assembly includes a drive rod 8, a trigger member 14 and a through hole 21. The through hole 21 is located on the side of the bottom rod 5 away from the pipe 2 and is opened on the pipe clamp 1. The bottom rod 5 is slidably connected to the through hole 21 through the insertion rod 24 fixedly connected to its side wall. The drive rod 8 is arc-shaped and slides inside the pipe clamp 1. The top of the drive rod 8 is fixedly connected to a rack rod 9, and the rack rod 9 is fixedly connected to a gear 10. The gear 10 rotates on the inner wall of the pipe clamp 1 and is fixedly connected to the clamping rod 4. A second torsion spring 11 is sleeved on the rotating shaft of the gear 10. The bottom end of the drive rod 8 is rotatably connected to a support rod 12. The bottom end of the support rod 12 is rotatably connected to a push plate 13, which is slidably connected to the inside of the pipe clamp 1 through a slide rod 1301 fixedly connected to the inner wall of the pipe clamp 1. A second spring 23 is fixedly connected between the push plate 13 and the inner wall of the pipe clamp 1. The bottom rod 5 is located on the side of the push plate 13 away from the pipe 2. The trigger member 14 is rotatably connected to the side of the push plate 13 away from the pipe 2. The end of the trigger member 14 extends to the outside of the pipe clamp 1 and can rotate in an arc trajectory inside the pipe clamp 1. A third torsion spring 15 is sleeved on the rotating shaft of the trigger member 14, and a transition surface 16 is provided on the top of the trigger member 14. When the supporting assembly drives the pipe clamp 1 to move to a fixed distance, it pushes the trigger member 14 to rotate.

[0024] like Figure 2 、 Figure 3 , Figures 10-16 As shown: Before the clamping rod 4 releases its grip on the moisture-proof layer 3, the second spring 23 is in a stretched state. However, the push plate 13 is blocked by the trigger member 14 and cannot slide along the slide rod 1301. As the pipe clamp 1 approaches the pipe 2, the bottom rod 5 moves along the cold insulation layer 101. As the diameter of the cold insulation layer 101 gradually increases, the bottom rod 5 slides along the pipe clamp 1 and gradually stretches the first spring 22. When the pipe clamp 1 moves toward the horizontal line P to a distance of L3, the trigger rod 20 contacts the end of the trigger member 14 moving downward and pushes the trigger member 14 to rotate around the rotation axis. At this time, the third torsion spring 15 is compressed, and the end of the trigger member 14 rotates to a position lower than the push plate 13. At this time, the second spring 23 quickly slides along the slide rod 1301. At this time, the support rod 12 drives the driving rod 8 to slide inside the pipe clamp 1 and drives the rack rod 9 to engage with the gear 10, so that the clamping rod 4 releases the restriction on the moisture-proof layer 3, and then the push plate 13 continues to move. When the push plate 13 contacts the side wall of the bottom rod 5, it will force the bottom rod 5 to slide along the pipe clamp 1 until the first spring 22 is stretched to Figure 15 The maximum extent shown (the spring constant of the first spring 22 is less than the spring constant of the second spring 23 ) indicates that the bottom bar 5 can be moved away from the pipe 2 to the maximum extent only after the clamping bar 4 releases the clamping of the moisture-proof layer 3 . After the first spring 22 is stretched to its maximum extent, the insertion rod 24 will slide into the inside of the through hole 21 and seal the through hole 21. The purpose of the through hole 21 is to directly push the bottom rod 5 by the external metal rod or other rod to move the push plate 13 to a position that passes over the trigger member 14 when the push plate 13 is reset, thereby storing elastic energy for the second spring 23. When the push plate 13 passes over the trigger member 14, it will contact the inclined transition surface 16 thereof and press down the trigger member 14, so that the trigger member 14 can be reset; When the rack rod 9 is disengaged from the gear 10, the second torsion spring 11 drives the clamping rod 4 to rotate to a horizontal state and then retract into the pipe clamp 1. The two clamping rods 4 on both sides of the pipe clamp 1 are staggered so that there will be no interference when the adjacent clamping rods 4 retract. The clamping rods 4 are all L-shaped and can block the moisture-proof layer 3 through the bottom barrier when clamping the moisture-proof layer 3 to avoid disengagement.

[0025] The support assembly includes two support frames 17 that are slidably connected to each other. Two positioning members 18 of different heights are provided on the support frames 17. Slots 26 are provided at both ends corresponding to the pipe clamp 1 and the positioning members 18. The slots 26 are slidably connected to the positioning members 18. The positioning members 18 are slidably connected to the support frames 17. A telescopic member 19 is fixedly connected between the positioning members 18 and the support frames 17. The telescopic member 19 is one of the air cylinders, electric cylinders, and electric push rods that can be wirelessly controlled in the prior art. Its installation and setting are common knowledge in the prior art and will not be described in detail here. The positions corresponding to the two support frames 17 and the trigger member 14 are fixedly connected with a trigger rod 20; when the trigger rod 20 contacts the trigger member 14, it pushes the trigger member 14 to rotate around the rotation axis.

[0026] The trigger rods 20 on the two support frames 17 have different heights.

[0027] like Figure 2 、 Figure 3 as well as Figure 16 As shown: The trigger lever 20 on the left and the trigger lever 20 on the right are spaced apart from the support frame 17 by L1 and L2, respectively. This arrangement allows the trigger member 14 on the left and the trigger member 14 on the right to be triggered alternately, thereby reducing the possibility of the top ends of the moisture-proof layer 3 on the left and the right overlapping each other when the moisture-proof layer 3 on the left and the moisture-proof layer 3 on the right are expanded with the bottom ends as the fulcrums. The pipe clamp 1 is supported by the insertion of the positioning member 18 into the slot 26 , and the relative displacement of the two pipe clamps 1 is achieved by the extension and retraction of the telescopic member 19 . The two relatively sliding support frames 17 form a detachable arrangement, which is convenient for placement under the pipe 2 .

[0028] When the pipe clamp 1 needs to be disassembled to replace the internal moisture-proof layer 3 or the cold-insulating layer, the positioning member 18 is plugged into the slot 26 again, and then the bolts are loosened to drive the two pipe clamps 1 away from each other. At this time, the auxiliary pushing force of the moisture-proof layer 3 by the resisting rod 6 can be provided to reduce the possibility of adhesion.

Claims

1. A cold-insulating pipe support, comprising two pipe clamps (1), a pipe (2), and a moisture-proof layer (3), characterized in that: It also includes a support assembly and two clamping groups respectively located on the two pipe clamps (1), wherein the support assembly is used to support the two pipe clamps (1) and adjust the relative distance between the two pipe clamps (1), and the clamping group includes: A clamping rod (4) is rotatably connected to the top of the pipe clamp (1) near one side; A bottom rod (5) is elastically slidably connected to the interior of the pipe clamp (1); The trigger assembly is used to control the clamping rod (4) to clamp the moisture-proof layer (3) and to control the horizontal sliding of the bottom rod (5). When the support assembly causes the two pipe clamps (1) to move relative to each other to a fixed distance, the clamping rod (4) first releases the clamping of the moisture-proof layer (3) and then moves the bottom rod (5) away from the moisture-proof layer (3) to the maximum side.

2. The cold-insulation pipe support according to claim 1, characterized in that: A resisting rod (6) is provided on one side of the clamping rod (4), the resisting rod (6) is rotatably connected to the inside of the pipe clamp (1), and a first torsion spring (7) is sleeved on the rotating shaft of the resisting rod (6); When the trigger assembly controls the clamping rod (4) to release the restriction on the moisture-proof layer (3), the resisting rod (6) pushes the moisture-proof layer (3) to fit onto the pipe (2) under the action of the first torsion spring (7).

3. The cold-insulation pipe support according to claim 2, characterized in that: The trigger assembly comprises a driving rod (8), a trigger member (14) and a through hole (21), wherein the through hole (21) is located on a side of the bottom rod (5) away from the pipe (2) and is opened on the pipe clamp (1), and the bottom rod (5) is slidably connected to the through hole (21), and the driving rod (8) is arc-shaped and slides inside the pipe clamp (1), and the top end of the driving rod (8) is fixedly connected to a rack rod (9), and the rack rod (9) is fixedly connected to a gear (10), and the gear (10) rotates on the inner wall of the pipe clamp (1) and is fixedly connected to the clamping rod (4), and a second torsion spring (11) is sleeved on the rotating shaft of the gear (10). The bottom end of the driving rod (8) is rotatably connected to a support rod (12), and the bottom end of the support rod (12) is rotatably connected to a push plate (13), and the push plate (13) is elastically slidably connected to the inside of the pipe clamp (1). The bottom rod (5) is located on the side of the push plate (13) away from the pipe (2). The trigger member (14) is rotatably connected to the side of the push plate (13) away from the pipe (2). The end of the trigger member (14) extends to the outside of the pipe clamp (1) and can rotate in an arc-shaped trajectory inside the pipe clamp (1). A third torsion spring (15) is sleeved on the rotating shaft of the trigger member (14), and a transition surface (16) is provided at the top end of the trigger member (14); When the support assembly drives the pipe clamp (1) to move to a fixed distance, it pushes the trigger member (14) to rotate.

4. The cold-insulation pipe support according to claim 3, characterized in that: The support assembly comprises two support frames (17) connected in a relative sliding manner, two positioning members (18) of different heights are provided on each of the support frames (17), the positioning members (18) are slidably connected to the support frames (17), a telescopic member (19) is fixedly connected between the positioning member (18) and the support frame (17), and a trigger rod (20) is fixedly connected at positions corresponding to the two support frames (17) and the trigger member (14); when the trigger rod (20) contacts the trigger member (14), it pushes the trigger member (14) to rotate around the rotation axis.

5. The cold-insulation pipe support according to claim 4, characterized in that: The trigger rods (20) located on the two support frames (17) have different heights.

6. The cold-insulation pipe support according to claim 1, characterized in that: The two clamping rods (4) located on both sides of the pipe clamp (1) are arranged alternately.

7. The cold-insulation pipe support according to claim 7, characterized in that: The clamping rods (4) are all L-shaped.

8. A cold-insulation pipe support construction method, applicable to the cold-insulation pipe support according to claim 5, characterized in that: The method comprises the following steps: Step 1: Place the two support frames (17) under the pipe (2) and connect them so that the positioning piece (18) and the slot (26) are connected, and the moisture-proof layer (3) is clamped and positioned by the clamping rod (4) and the bottom frame (5) in turn; Step 2: The telescopic member (19) is shortened and drives the two pipe clamps (1) to move relative to each other through the positioning member (18) until the trigger member (14) contacts the trigger rod (20) in succession. The trigger member (14) rotates to cause the push plate (13) to pass over the trigger member (14), causing the support rod (12) to drive the driving rod (8) to slide inside the pipe clamp (1), causing the clamping rod (4) to release the clamping of the moisture-proof layer (3); Step 3: When the moisture barrier (3) is relaxed, the resisting rod (6) provides guidance for pressing down on its top end; Step 4: After the clamping rod (4) is released, the push plate (13) pushes the bottom rod (5) away to the maximum extent, and then continues to drive the two pipe clamps (1) to move, ensuring a tight fit through the mutual resistance between the ends of the moisture-proof layer (3); Step 5: After fixing the pipe clamp (1) with bolts, separate the two support frames (7) and the pipe clamp (1) to complete the disassembly.

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