A support mechanism for thermal insulation pipe

Abstract

The present invention relates to a support mechanism for an insulated pipe, and belongs to the technical field of fixed supports for insulated pipes. The present invention comprises a working steel pipe with an axis extending left and right, and an outer protective steel pipe sleeved on the outside of the working steel pipe at intervals, an insulating layer is arranged on the outside of the working steel pipe, and a ring-shaped flexible band is sleeved on the outside of the insulating layer, the flexible band is tightened on the insulating layer, an adjusting rod is sandwiched between the flexible band and the insulating layer, and an elastic member 1 is connected between the adjusting rod and the outer protective steel pipe; two strip pressure plates are symmetrically arranged on both sides of the adjusting rod, the strip pressure plates are located between the flexible band and the insulating layer, and the two strip pressure plates are both connected to the adjusting rod in transmission, and when the adjusting rod moves upward, the two strip pressure plates can be driven to approach each other; the elastic member 1 shrinks upward when the working steel pipe shrinks when it is cold, and drives the adjusting rod to move upward, thereby pulling the flexible band to support the insulating layer to move upward. The present invention can make the insulating layer automatically close to the working steel pipe that shrinks when it is cold, and the insulation effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation pipe fixing brackets, and in particular to a bracket mechanism for thermal insulation pipes. Background Art

[0002] Steel-in-steel thermal insulation fixed bracket, also known as fixed knot, is a bracket mechanism used to fix thermal pipes and maintain their temperature. It is generally prefabricated in the factory and then connected to the thermal pipeline during on-site construction. The steel-in-steel thermal insulation fixed bracket is generally composed of a working steel pipe and an outer protective pipe sleeved on the outside of the working steel pipe. There is also an insulation layer between the working steel pipe and the outer protective pipe. The insulation layer is used to maintain the temperature of the working pipe and prevent heat loss.

[0003] For example, the patent with authorization announcement number CN203176547U discloses a corrugated compensating steel-jacketed steel insulation fixed support, which includes a working steel pipe, an outer protective steel pipe, an insulation layer, a hard asbestos insulation pad, an inner fixed bracket card plate and an outer fixed bracket card plate. The outer protective steel pipe is arranged on the outside of the working steel pipe, and both ends of the working steel pipe extend out of the outer protective steel pipe. The insulation layer is sleeved on the outside of the working steel pipe, and the outer fixed bracket card plate is arranged outside the center of the working steel pipe and passes through the outer protective steel pipe. Two inner fixed bracket card plates are installed on the working steel pipe and are arranged on both sides of the outer fixed bracket card plate. Hard asbestos insulation pads are provided between the outer fixed bracket card plate and the inner fixed bracket card plates on both sides.

[0004] In this fixed support, the working steel pipe has a high coefficient of thermal expansion and has the characteristics of thermal expansion and contraction. It will expand when heated and contract when cooled. When the working steel pipe contracts when cooled, the distance between the external insulation layer and the working steel pipe will increase, resulting in the insulation layer being unable to fit tightly against the outer wall of the working steel pipe. Gaps will be created between the working steel pipe and the insulation layer, causing the insulation effect to deteriorate and heat loss to occur. In the prior art, the insulation layer is generally pressed against the working steel pipe by adding a clamp to the outside of the insulation layer. However, the clamp cannot achieve uniform compression of the insulation layer, and will also cause more wrinkles on the inner side of the insulation layer and cause it to bulge upward. There will still be more gaps between the insulation layer and the working steel pipe, affecting the insulation effect. Summary of the invention

[0005] The invention provides a support mechanism for an insulated pipe, so as to solve the technical problem that the insulation layer outside the working steel pipe in the steel jacket steel insulation fixed support in the prior art cannot be closely attached to the working steel pipe when the working steel pipe contracts when it is cooled.

[0006] In order to solve the above problems, the present invention provides a support mechanism for heat-insulating pipes, which adopts the following technical solutions:

[0007] A support mechanism for an insulated pipe comprises a working steel pipe extending left and right with an axis and an outer protective steel pipe sleeved on the outside of the working steel pipe at intervals, an insulating layer is arranged on the outside of the insulating layer, an annular flexible binding belt is sleeved on the outside of the insulating layer, the flexible binding belt is tightened on the insulating layer, an adjusting rod extending left and right and located above the insulating layer is sandwiched between the flexible binding belt and the insulating layer, an elastic member 1 is connected between the adjusting rod and the outer protective steel pipe, and the elastic member 1 applies an upward elastic force to the adjusting rod;

[0008] Two strip pressure plates parallel to the adjusting rod are symmetrically arranged on both sides of the adjusting rod. The strip pressure plates are located between the flexible binding belt and the insulation layer. Both strip pressure plates are connected to the adjusting rod in a transmission manner. When the adjusting rod moves upward, the two strip pressure plates can be driven to move closer to each other.

[0009] When the working steel pipe contracts when it is cooled, the elastic member contracts upward and drives the adjusting rod to move upward, thereby pulling the flexible strap to support the thermal insulation layer to move upward, so that the part of the thermal insulation layer away from the adjusting rod is pressed against the working steel pipe, and the two strip pressure plates are driven by the adjusting rod to approach each other, so as to squeeze the parts of the thermal insulation layer located on both sides of the adjusting rod close to each other, so that the part of the thermal insulation layer close to the adjusting rod is pressed against the working steel pipe.

[0010] By adopting the above technical solution, when the working steel pipe contracts when it is cold, a gap will be formed between the insulation layer and the working steel pipe, and a margin of relative movement will be generated between the insulation layer and the working steel pipe. At this time, the elastic member can restore the elastic deformation and drive the adjustment rod to move upward. The adjustment rod supports the top of the flexible band to move upward, and the flexible band drives the insulation layer to move upward, so that the part of the insulation layer away from the adjustment rod is pressed against the working steel pipe from bottom to top. The two strip pressure plates are driven by the adjustment rod to approach each other while the adjustment rod moves upward, thereby squeezing the part of the insulation layer close to the adjustment rod on both sides of the adjustment rod toward the middle, so that this part of the insulation layer is also pressed against the outer wall of the working steel pipe, and at the same time, the rest of the insulation layer is pulled closer to each other toward the top, so that the insulation layer fits more closely on the side wall of the working steel pipe.

[0011] By setting the elastic member 1, the flexible strap, the adjustment rod and the strip pressure plate, the state of the insulation layer can be automatically adjusted after the working steel pipe shrinks when it is cooled, so that the insulation layer can automatically and tightly fit on the shrunk working steel pipe after the working steel pipe shrinks. The insulation layer can be pressed more evenly on the outside of the working steel pipe, and the inner circle of the insulation layer has fewer wrinkles. Only the area directly below the adjustment rod is squeezed by the strip pressure plate to form wrinkles, and the gap of the wrinkled area squeezed by the strip pressure plate is extremely small, so that the insulation layer has a better insulation effect.

[0012] Furthermore, an L-shaped swing arm with an opening facing the insulation layer is provided between the adjusting rod and the two strip pressure plates. The corners of the L-shaped swing arm are hinged to the outer protective steel pipe. One end of the L-shaped swing arm is slidingly hinged to the adjusting rod, and the other end is fixedly connected to the strip pressure plate. When the adjusting rod moves upward, it drives the L-shaped swing arm to rotate around the hinge axis between it and the outer protective steel pipe, thereby driving the two strip pressure plates to approach each other.

[0013] By adopting the above technical solution, when the adjusting rod moves upward, the L-shaped swing arms on both sides are driven to swing around the hinge center of the L-shaped swing arm and the outer protective steel pipe, thereby driving the two strip pressure plates to approach each other, and the transmission structure is simple and ingenious.

[0014] Furthermore, a plurality of pressure rods extending left and right are sandwiched between the flexible binding band and the insulation layer. The plurality of pressure rods are spaced around the insulation layer. An elastic member 2 is connected between the pressure rod and the outer protective steel pipe. The elastic member 2 applies an elastic force to the pressure rod along the radial direction of the working steel pipe toward the working steel pipe, so that the pressure rod presses the insulation layer tightly against the working steel pipe.

[0015] By adopting the above technical solution, the pressure rod is pressed onto the insulation layer along the radial direction of the working steel pipe under the action of the second elastic member, so that the insulation layer is pressed tighter on the working steel pipe, preventing the formation of gaps between the insulation layer and the working steel pipe, and achieving better insulation effect.

[0016] Furthermore, both ends of the compression rod and the adjustment rod extend to the outside of the outer protective steel pipe.

[0017] When adopting the above technical solution, other pipes need to be welded on both sides of the outer protective steel pipe. The other pipes are generally spliced ​​by two arc-shaped plates with openings facing each other, so that the two ends of the pressure rod and the adjusting rod extend to the outside of the outer protective steel pipe. During the welding process, the parts of the pressure rod and the adjusting rod extending to the outside of the outer protective steel pipe can support the arc-shaped plate and position the arc-shaped plate.

[0018] Furthermore, two inner ring plates are sleeved on the outer side of the middle section of the working steel pipe, and the outer protective steel pipe includes an outer ring plate and two outer pipe sections. The two outer pipe sections are coaxial with the outer ring plate and are respectively connected to the left and right sides of the outer ring plate. The outer ring plate is located between the two inner ring plates and is spaced apart from the working steel pipe in the radial direction of the working steel pipe. Insulation plates are sandwiched between the outer ring plate and the two inner ring plates.

[0019] By adopting the above technical solution, the outer ring plate is clamped between the two inner ring plates, so that the outer protective steel pipe and the working steel pipe are relatively fixed in the axial direction. A gap is provided between the outer ring plate and the working steel pipe, and an insulation plate is provided between the outer ring plate and the inner ring plate to prevent the outer ring plate from directly contacting the working steel pipe and the inner ring plate, thereby preventing the heat from being directly transferred to the outer ring plate, and preventing the heat from being dissipated outward through the outer ring plate.

[0020] Furthermore, an outer sleeve is provided on the outer side of the middle section of the outer protective steel pipe, and an insulation cavity is formed between the outer sleeve and the outer protective steel pipe. The outer ring plate is located in the insulation cavity, and the insulation cavity is filled with insulation material that can cover the outer ring plate.

[0021] By adopting the above technical solution, the outer ring plate is located in the heat-insulating cavity and is covered by the heat-insulating material, which can further prevent heat from being lost to the outside through the outer ring plate.

[0022] Furthermore, the outer ring plate is provided with a plurality of strip-shaped through holes which are spaced apart in the circumferential direction of the outer ring plate and extend in the radial direction of the outer ring plate, and the adjustment rod and the plurality of pressure rods are respectively arranged in each strip-shaped through hole.

[0023] By adopting the above technical solution, the adjusting rod and the pressing rod are both inserted into the strip-shaped through-hole, and the strip-shaped through-hole can guide the movement of the adjusting rod and the pressing rod, so that the movement paths of the adjusting rod and the pressing rod are more accurate.

[0024] Furthermore, moisture-proof pipes are provided on the tops of the two outer pipe sections, and the moisture-proof pipes are filled with thermal insulation materials.

[0025] By adopting the above technical solution, when the pipeline is not in operation for a long time, moisture in the air will enter the insulation layer. When the pipeline starts to heat up, the moisture in the insulation layer evaporates into gas and is discharged through the moisture-proof pipe, preventing the insulation layer from being in a humid state and affecting the insulation effect. The moisture-proof pipe is filled with insulation material to prevent heat from being lost through the moisture-proof pipe.

[0026] The beneficial effect of the support mechanism for an insulated pipe provided by the present invention is that when the working steel pipe shrinks due to cold, the state of the insulation layer is automatically adjusted through the setting of the elastic member, the flexible binding belt, the adjustment rod and the strip pressure plate, so that the insulation layer can be evenly pressed on the shrunk working steel pipe, the insulation layer can be tightly attached to the outer wall of the working steel pipe, the insulation layer produces fewer wrinkles, and the insulation effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a support mechanism for a heat-insulating pipe provided by the present invention;

[0029] Figure 2 A three-dimensional cross-sectional view of a support mechanism for a heat-insulating pipe provided by the present invention;

[0030] Figure 3A schematic diagram of the structure of a support mechanism for an insulated pipe provided by the present invention after removing the outer protective steel pipe Figure 1 ;

[0031] Figure 4 for Figure 3 A schematic diagram of the structure enlargement at the center A;

[0032] Figure 5 A schematic diagram of the structure of a support mechanism for an insulated pipe provided by the present invention after removing the outer protective steel pipe Figure 2 ;

[0033] Figure 6 A three-dimensional cross-sectional view of an outer protective pipe in a support mechanism for a thermal insulation pipe provided by the present invention;

[0034] Figure 7 A schematic diagram of a first state of a support mechanism for a heat-insulating pipe provided by the present invention;

[0035] Figure 8 A schematic diagram of a second state of a support mechanism for a heat-insulating pipe provided by the present invention;

[0036] Fig. 9 A schematic diagram of a third state of a support mechanism for a thermal insulation pipe provided by the present invention.

[0037] Description of reference numerals:

[0038] 1. Outer protective steel pipe; 101. Outer pipe section; 2. Working steel pipe; 3. Adjusting rod; 4. Moisture-proof pipe; 5. Outer sleeve; 6. Pressure rod; 7. Insulation layer; 8. Elastic part 1; 9. Elastic part 2; 10. Flexible binding belt; 11. Outer ring plate; 111. Strip perforation; 12. Inner ring plate; 13. Insulation plate; 14. Articulated shaft; 15. L-shaped swing arm; 151. Rod 1; 152. Rod 2; 153. Strip mounting hole; 16. Strip pressure plate. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0040] The following is one embodiment of a support mechanism for a thermal insulation pipe provided by the present invention:

[0041] like Figure 1-Figure 8As shown, a support mechanism for an insulated pipe includes a working steel pipe 2, an outer protective steel pipe 1, an insulation layer 7, a flexible binding belt 10, an adjustment rod 3, an elastic member 1 8, a pressure rod 6, an elastic member 2 9, an L-shaped swing arm 15 and a strip pressure plate 16.

[0042] like Figure 2 , Figure 3 , Figure 5 As shown, the working steel pipe 2 extends left and right, and two inner ring plates 12 are sleeved on the outer side of the middle section of the working steel pipe 2. The two inner ring plates 12 are spaced apart from each other and are connected to the working steel pipe 2 by welding.

[0043] like Figure 2 , Figure 6 As shown, the outer protective steel pipe 1 includes an outer ring plate 11 and two outer pipe sections 101. The outer ring plate 11 is sleeved on the outside of the middle section of the working steel pipe 2 and is spaced apart from the working steel pipe 2 in the radial direction of the working steel pipe 2. The outer ring plate 11 is located between the two inner ring plates 12, and an insulation plate 13 is sandwiched between the outer ring plate 11 and the two inner ring plates 12.

[0044] The outer ring plate 11 is evenly distributed with four strip-shaped through-holes 111 penetrating from left to right and extending in the radial direction of the outer ring plate 11, of which two strip-shaped through-holes 111 are arranged opposite to each other up and down, and the other two strip-shaped through-holes 111 are arranged opposite to each other left to right. The two outer tube sections 101 are coaxial with the outer ring plate 11 and are welded to the left and right sides of the outer ring plate 11 respectively. A gap is provided between the outer tube section 101 and the working steel pipe 2, and the outer diameter of the outer ring plate 11 is larger than the outer diameter of the outer tube section 101.

[0045] The outer side of the middle section of the outer protective steel pipe 1 is sleeved with an outer sleeve 5, and the outer sleeve 5 is welded to the two outer pipe sections 101. Figure 2 As shown, the outer sleeve 5 is an annular structure with a U-shaped cross section, and a heat preservation cavity is formed between the outer sleeve 5 and the outer protective steel pipe 1, and the portion of the outer ring plate 11 located outside the outer pipe section 101 is wrapped in the heat preservation cavity. The heat preservation cavity is filled with heat preservation material, and the heat preservation material covers the outer ring plate 11 and the connection position between the outer ring plate 11 and the outer pipe section 101 to prevent heat from being lost to the outside from the outer ring plate 11 and the welding position between the outer ring plate 11 and the outer pipe section 101.

[0046] A moisture-proof pipe 4 extending vertically and connected to the inner cavity of the outer pipe section 101 is provided above each outer pipe section 101. The moisture-proof pipe 4 is filled with thermal insulation material, and a gas sensor capable of detecting whether there is gas flowing in the moisture-proof pipe 4 is also provided at the outlet of the moisture-proof pipe 4.

[0047] like Figure 2 , Figure 3 , Figure 5As shown, the insulation layer 7 is provided with two pieces, and the two insulation layers 7 are both sleeved on the outside of the working steel pipe 2 and are respectively arranged on the left and right sides of the two inner ring plates 12. The insulation layer 7 is made of a flexible material and can be deformed when subjected to force.

[0048] There are multiple flexible binding bands 10 in a ring shape. The outer side of each thermal insulation layer 7 is sleeved with multiple flexible binding bands 10 spaced apart from each other. The flexible binding bands 10 are almost not elastic.

[0049] The adjusting rod 3 extends in the left-right direction, and is sandwiched between the flexible binding band 10 and the insulation layer 7, and is located directly above the insulation layer 7. The middle of the adjusting rod 3 is inserted into the strip-shaped through hole 111 located at the top of the outer ring plate 11, and both left and right ends of the adjusting rod 3 extend to the outside of the outer protective steel pipe 1. Two rows of hinge shafts are symmetrically arranged at the top of the adjusting rod 3, and each row of hinge shafts is composed of a plurality of hinge shafts 14 extending left and right and distributed at equal intervals in the left-right direction.

[0050] There are multiple elastic members 8, which are tension springs that can be extended and retracted in the up-down direction. The multiple elastic members 8 are connected between the adjustment rod 3 and the outer protection steel pipe 1, and are evenly spaced in the left-right direction. When the working steel pipe 2 does not shrink and deform at room temperature, the elastic member 8 is in a stretched state, and the elastic member 8 applies an upward elastic force to the adjustment rod 3.

[0051] There are three compression rods 6, which extend in the left-right direction and are clamped between the flexible binding belt 10 and the insulation layer 7. The middle parts of the three compression rods 6 are respectively passed through the other three strip through holes 111 on the outer ring plate 11, and the left and right ends of the compression rods 6 extend to the outside of the outer protective steel pipe 1.

[0052] There are multiple elastic members 9, and multiple elastic members 9 are connected between each compression rod 6 and the outer steel pipe 1, and the multiple elastic members 9 between the compression rod 6 and the outer steel pipe 1 are evenly spaced in the left-right direction. The elastic member 9 is a compression spring that can extend in the radial direction of the working steel pipe 2. The elastic member 9 is in a compressed state, and the elastic member 9 applies an elastic force toward the working steel pipe 2 to the compression rod 6, so that the compression rod 6 presses the thermal insulation layer 7 against the working steel pipe 2.

[0053] like Figure 3 , Figure 5 As shown, there are multiple L-shaped swing arms 15, and the same number of L-shaped swing arms 15 are provided on the front and rear sides of the adjusting rod 3, and the L-shaped swing arms 15 on the front and rear sides of the adjusting rod 3 are symmetrically arranged, and each L-shaped swing arm 15 corresponds to each hinge shaft 14 one by one.

[0054] like Figure 4As shown, the L-shaped swing arm 15 includes a rod 151 and a rod 2 152 connected to each other, and an obtuse angle is formed between the rod 151 and the rod 2 152, with the opening facing the insulation layer 7. A strip-shaped mounting hole 153 extending along the length direction of the rod 151 is provided on the end of the rod 151 facing away from the rod 2 152, and each L-shaped swing arm 15 is sleeved on the corresponding hinge shaft 14 through the strip-shaped mounting hole 153 on the rod 151, so that the rod 151 is slidably hinged on the adjustment rod 3. The connecting position of the rod 151 and the rod 2 152 is hinged on the outer protective steel pipe 1 around an axis extending left and right.

[0055] like Figure 3 , Figure 5 As shown, there are two strip pressure plates 16 and both extend in the left-right direction. The two strip pressure plates 16 are respectively arranged on the front and rear sides of the adjustment rod 3 and are both located between the flexible binding band 10 and the insulation layer 7. Each strip pressure plate 16 is fixedly connected to one end of the plurality of rods 2 152 located on the same side that faces away from the rod 1 151.

[0056] When the working steel pipe 2 contracts when it is cold, the elastic member 8 contracts upward and drives the adjusting rod 3 to move upward, thereby pulling the flexible binding belt 10 to move the thermal insulation layer 7 upward, so that the portion of the thermal insulation layer 7 away from the adjusting rod 3 is pressed tightly against the working steel pipe 2, and the two strip pressure plates 16 are driven by the adjusting rod 3 to approach each other, so as to squeeze the portions of the thermal insulation layer 7 located on both sides of the adjusting rod 3 close to each other, so that the portion of the thermal insulation layer 7 close to the adjusting rod 3 is pressed tightly against the working steel pipe 2.

[0057] During the use of the present invention, if the working steel pipe 2 contracts when it is cooled, a gap is formed between the insulation layer 7 and the working steel pipe 2. At this time, the state is as follows: Figure 7 As shown, the elastic member 8 in the stretched state recovers its deformation and drives the adjusting rod 3 to move upward. The adjusting rod 3 lifts the top of the flexible band 10 and pulls the flexible band 10 upward. The flexible band 10 drives the thermal insulation layer 7 to move upward, so that the part of the thermal insulation layer 7 away from the adjusting rod 3 is closely attached to the working steel pipe 2 from bottom to top. At this time, the state is as shown in FIG. Figure 8 As the adjusting rod 3 moves upward, the L-shaped swing arm 15 swings under the drive of the adjusting rod 3, driving the two strip pressure plates 16 to approach each other and deflect downward. The two strip pressure plates 16 squeeze the part of the insulation layer 7 located on the front and rear sides of the adjusting rod 3 toward the middle, so that this part of the insulation layer 7 is also closely attached to the outer wall of the working steel pipe 2, and at the same time, the rest of the insulation layer 7 is pulled toward the top, so that the entire insulation layer 7 is more closely attached to the outer wall of the working steel pipe 2. At this time, the state is as shown. Fig. 9 shown.

[0058] The present invention can automatically tighten the insulation layer 7 on the working steel pipe 2 when the working steel pipe 2 shrinks when cooled. The insulation layer 7 can be pressed more evenly against the outside of the working steel pipe 2. The insulation layer 7 produces fewer wrinkles, and the insulation layer 7 and the working steel pipe 2 fit more closely, resulting in a better insulation effect.

[0059] In this embodiment, three pressure rods 6 are sandwiched between the flexible binding belt 10 and the thermal insulation layer 7 . In other embodiments, no pressure rod 6 is disposed between the flexible binding belt 10 and the thermal insulation layer 7 .

[0060] In this embodiment, both ends of the adjusting rod 3 and the pressure rod 6 extend to the outside of the outer protective steel pipe 1. In other embodiments, the left and right ends of the adjusting rod 3 are flush with the left and right ends of the outer protective steel pipe 1, and the left and right ends of the pressure rod 6 are flush with the left and right ends of the outer protective steel pipe 1.

[0061] In this embodiment, the strip pressure plate 16 is transmission-connected to the adjusting rod 3 via an L-shaped swing arm 15, so that when the adjusting rod 3 moves upward, the two strip pressure plates 16 can be driven to approach each other. In other embodiments, swing rods are symmetrically provided on the front and rear sides of the adjusting rod 3, and the top of the swing rod is hinged on the outer protective steel pipe 1 around an axis extending left and right, and the bottom end of the swing rod is fixedly connected to the strip pressure plate 16. A pull rope is connected between the adjusting rod 3 and the swing rods on the front and rear sides. When the adjusting rod 3 moves upward, the swing rod is pulled by the pull rope to swing, and the bottom end of the swing rod swings toward the adjusting rod 3, thereby driving the two strip pressure plates 16 to approach each other.

Claims

1. A support mechanism for an insulated pipe, comprising a working steel pipe (2) extending left and right along its axis and an outer protective steel pipe (1) sleeved on the outside of the working steel pipe (2) at intervals, an insulating layer (7) being provided on the outside of the working steel pipe (2), characterized in that: An annular flexible binding belt (10) is sleeved on the outer side of the thermal insulation layer (7), the flexible binding belt (10) is tightened on the thermal insulation layer (7), an adjustment rod (3) extending left and right and located above the thermal insulation layer (7) is sandwiched between the flexible binding belt (10) and the thermal insulation layer (7), an elastic member (8) is connected between the adjustment rod (3) and the outer protective steel pipe (1), and the elastic member (8) applies an upward elastic force to the adjustment rod (3); Two strip pressure plates (16) parallel to the adjusting rod (3) are symmetrically arranged on both sides of the adjusting rod (3); the strip pressure plates (16) are located between the flexible binding belt (10) and the thermal insulation layer (7); the two strip pressure plates (16) are both transmission-connected to the adjusting rod (3); when the adjusting rod (3) moves upward, the two strip pressure plates (16) can be driven to move closer to each other; An L-shaped swing arm (15) with an opening facing the insulation layer (7) is provided between the adjustment rod (3) and the two strip pressure plates (16). The corner of the L-shaped swing arm (15) is hinged to the outer protective steel pipe (1). One end of the L-shaped swing arm (15) is slidably hinged to the adjustment rod (3), and the other end is fixed to the strip pressure plate (16). When the adjustment rod (3) moves upward, the L-shaped swing arm (15) is driven to rotate around the hinge center between the L-shaped swing arm (15) and the outer protective steel pipe (1), thereby driving the two strip pressure plates (16) to approach each other.

2. A support mechanism for a heat-insulating pipe according to claim 1, characterized in that: A plurality of compression rods (6) extending left and right are sandwiched between the flexible binding belt (10) and the thermal insulation layer (7). The plurality of compression rods (6) are spaced around the thermal insulation layer (7). A second elastic member (9) is connected between the compression rod (6) and the outer protective steel pipe (1). The second elastic member (9) applies an elastic force to the compression rod (6) along the radial direction of the working steel pipe (2) toward the working steel pipe (2), so that the compression rod (6) presses the thermal insulation layer (7) against the working steel pipe (2).

3. A support mechanism for a heat-insulated pipe according to claim 2, characterized in that: Both ends of the pressure rod (6) and the adjustment rod (3) extend to the outside of the outer protective steel pipe (1).

4. A support mechanism for a heat-insulated pipe according to claim 1, characterized in that: Two inner ring plates (12) are sleeved on the outer side of the middle section of the working steel pipe (2); the outer protective steel pipe (1) comprises an outer ring plate (11) and two outer pipe sections (101); the two outer pipe sections (101) are coaxial with the outer ring plate (11) and are respectively connected to the left and right sides of the outer ring plate (11); the outer ring plate (11) is located between the two inner ring plates (12) and is spaced from the working steel pipe (2) in the radial direction of the working steel pipe (2); and a heat insulation plate (13) is sandwiched between the outer ring plate (11) and the two inner ring plates (12).

5. A support mechanism for a heat-insulated pipe according to claim 4, characterized in that: An outer sleeve (5) is sleeved on the outer side of the middle section of the outer protective steel pipe (1), a heat-insulating cavity is formed between the outer sleeve (5) and the outer protective steel pipe (1), the outer ring plate (11) is located in the heat-insulating cavity, and the heat-insulating cavity is filled with a heat-insulating material capable of covering the outer ring plate (11).

6. A support mechanism for a heat-insulated pipe according to claim 4, characterized in that: The outer ring plate (11) is provided with a plurality of strip-shaped through holes (111) which are spaced apart in the circumferential direction of the outer ring plate (11) and extend in the radial direction of the outer ring plate (11), and the adjustment rod (3) and the plurality of pressure rods (6) are respectively inserted into each of the strip-shaped through holes (111).

7. A support mechanism for a heat-insulated pipe according to claim 4, characterized in that: A moisture-proof pipe (4) is provided on the top of each of the two outer pipe sections (101), and the moisture-proof pipe (4) is filled with a heat-insulating material.

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