Safe and economical heat pipe installation method

Abstract

The present application relates to the field of heat pipeline construction, and more particularly to a safe and economical heat pipeline installation method, comprising the following steps: Step 1, centering clamping, the inner tooth ring drives multiple sets of centering clamping blocks to perform synchronous radial displacement, and two sets of centering assemblies respectively center and clamp coarse-diameter pipelines and fine-diameter pipelines; Step 2, alignment of two ends, the installation flanges of the coarse-diameter pipelines and the fine-diameter pipelines respectively correspond to and abut against the two ends of the gradually expanding pipe; Step 3, positioning and installation, a positioning motor drives a driving wheel and a hollow shaft to rotate synchronously, and the two ends of the push block respectively push the corresponding sealing pipe sleeve, and the coarse-diameter pipelines and the fine-diameter pipelines are respectively positioned and installed with the two ends of the transition pipe sleeve. In the present application, the clamping center of the centering clamping block is always kept on the central axis of the transition pipe sleeve, and the centering clamping block can clamp heat pipelines of different diameters, so that the coarse-diameter pipelines and the fine-diameter pipelines can be axially aligned, which is beneficial to the installation process.

Description

Technical Field

[0001] This invention relates to the field of heating pipeline construction technology, and in particular to a safe and economical method for installing heating pipelines. Background Technology

[0002] In recent years, with the continuous increase in the national urbanization rate, urban centralized heating, as a municipal infrastructure, has also developed significantly. As an important component of the urban centralized heating system, the "heating pipeline network" is responsible for the timely transmission and distribution of heat generated by the heat source to heat users, serving as a vital link between the heat source and the heat users. Currently, the main methods of laying urban heating pipeline networks include direct burial, trench or gallery laying, and overhead laying. Among these, direct burial is widely used due to its advantages such as low engineering cost, short construction period, small excavation cross-section, and minimal inspection and maintenance.

[0003] Buried heating pipelines are classified into compensated and uncompensated types based on whether the long straight pipe sections have anchorage sections. In compensated installations, the presence of compensators often creates weak points in the pipeline network, leading to their decreasing application. Uncompensated installations, on the other hand, have gained widespread use due to the reduction or elimination of compensators.

[0004] Currently, the design and implementation of direct-buried hot water pipeline projects for urban heating in China primarily utilize uncompensated direct burial. Due to differences in pipe diameter, transition sections are required for connection and transition. Existing methods for connecting different pipe diameters typically involve welding. However, during welding, it's difficult to maintain coaxial alignment between pipes of different diameters, inevitably leading to some deviation at the weld joint. This can result in high peak stress or even exceeding safety limits at the weld joint, which is detrimental to the safe delivery of heat. Summary of the Invention

[0005] The purpose of this invention is to provide a safe and economical method for installing thermal pipelines, thereby solving the aforementioned technical problems.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A safe and economical method for installing thermal pipelines is disclosed. The installation method uses a device including a transition sleeve, a base, and a top plate. Rollers are installed on the upper end of the base, and the transition sleeve rests on the rollers. A gradually expanding pipe is coaxially arranged inside the transition sleeve. The top plate is hoisted and fixed above the transition sleeve by lifting lugs. Displacement drive pairs are provided at both ends of the top plate. Each set of displacement drive pairs is driven and connected to a centering assembly. The two sets of centering assemblies respectively clamp and fix a large-diameter pipe and a small-diameter pipe in the center. The ends of the large-diameter pipe and the small-diameter pipe facing the transition sleeve are provided with mounting flanges. Sealing sleeves are fitted on the outer sides of the large-diameter pipe and the small-diameter pipe. A positioning assembly is provided at the center of the bottom of the top plate.

[0008] The centering assembly includes a fixed bracket and a cover. A movable seat is provided at the top of the fixed bracket, and the movable seat is connected to a displacement drive pair. A centering motor is provided on one side of the fixed bracket, and a centering gear is connected to the output end of the centering motor. A through hole for the heating pipe is provided in the center of the cover, and the cover is coaxially arranged with the transition sleeve. A fixed plate is fixedly provided inside the cover. An internal gear ring and an external gear ring are rotatably installed on the fixed plate. Multiple centering clamps are radially slidably arranged at equal intervals on the end face of the fixed plate. Each centering clamp is provided with a diameter-changing pin. A diameter-changing arc groove is provided at equal intervals on the internal gear ring. The diameter-changing pin is adapted to slide in the corresponding diameter-changing arc groove. The centering gear drives the internal gear ring to rotate through the external gear ring to adjust the clamping pipe diameter.

[0009] The positioning component includes a support frame, a connecting shaft rotatably mounted at the bottom of the support frame, drive wheels at both ends of the connecting shaft, the drive wheels abutting against the outer surface of the transition sleeve, a hollow shaft rotatably mounted inside the support frame, positioning screws connected to both ends of the hollow shaft, the positioning screws passing through the support frame and fixedly connected to a push frame, multiple push blocks equally spaced inside the push frame, and a positioning motor fixedly mounted on the support frame, the positioning motor being simultaneously connected to both the connecting shaft and the hollow shaft.

[0010] The installation method includes the following steps:

[0011] Step 1: Centering and clamping. The centering motor drives the centering gear to rotate. The centering gear drives the inner gear ring to rotate through the outer gear ring. The inner gear ring drives multiple sets of centering clamps to perform synchronous radial displacement. The two sets of centering components respectively center and clamp the large-diameter pipe and the small-diameter pipe.

[0012] Step 2: Align both ends. The two sets of displacement drive pairs drive the positioning components to move simultaneously, so that the large-diameter pipe and the small-diameter pipe gradually approach the transition sleeve until the mounting flanges of the large-diameter pipe and the small-diameter pipe are respectively aligned with the two ends of the diffuser.

[0013] Step 3: Positioning and installation. The positioning motor drives the drive wheel and the hollow shaft to rotate synchronously. The drive wheel drives the transition tube sleeve to rotate on the roller. At the same time, the hollow shaft drives the pushers at both ends to move toward the transition tube sleeve. The push blocks at both ends push the corresponding sealing tube sleeves respectively, positioning and installing the large-diameter pipe and the small-diameter pipe with the two ends of the transition tube sleeve respectively.

[0014] As a further embodiment of the present invention: the inner toothed ring is provided with a first tooth groove in the inner circumferential direction, the outer toothed ring is provided with a second tooth groove in the inner circumferential direction, and a synchronous gear is rotatably mounted on the fixed plate at equal intervals in the circumferential direction. The synchronous gear meshes with the first tooth groove and the second tooth groove simultaneously. The outer toothed ring is provided with an outer tooth groove in the outer circumferential direction, and the centering gear meshes with the outer tooth groove.

[0015] As a further embodiment of the present invention: a first ring rail and a second ring rail are respectively provided on the end face of the fixing plate, the inner toothed ring is rotatably engaged with the first ring rail, and the outer toothed ring is rotatably engaged with the second ring rail.

[0016] As a further embodiment of the present invention: the fixing plate is provided with equally spaced sliding grooves, the centering clamp is adapted to be slidably installed in the corresponding sliding groove, and a return spring is provided between the centering clamp and the end wall of the sliding groove.

[0017] As a further aspect of the present invention: the output end of the positioning motor is respectively connected to a first transmission belt and a second transmission belt, the first transmission belt is connected to a connecting shaft, the second transmission belt is connected to a hollow shaft, and threaded sleeves are fixedly provided at both ends of the hollow shaft, and the positioning screws are threaded through the corresponding threaded sleeves respectively.

[0018] As a further aspect of the present invention: support guide rods are fixedly connected to both ends of the support frame, and the support guide rods slide through the corresponding push frame.

[0019] As a further aspect of the present invention: the two ends of the transition sleeve are provided with positioning holes at equal intervals in the circumferential direction, and the end of the sealing sleeve facing the transition sleeve is provided with a positioning pin in the circumferential direction. The sealing sleeve is connected to the transition sleeve through a connector.

[0020] As a further aspect of the present invention: step 3 includes:

[0021] Step 3.1: The locating pin passes through the mounting flange and rests against the end wall of the transition sleeve. At the same time, the pusher applies a pushing force to the sealing sleeve. As the transition sleeve rotates, when the locating pin aligns with the locating hole, the locating pin will immediately insert into the corresponding locating hole. Simultaneously, the pusher pushes the sealing sleeve to slide inward a certain distance.

[0022] Step 3.2: One end of the sealing sleeve abuts against the sealing flange, and the other end of the sealing sleeve abuts against the end wall of the transition sleeve. The sealing sleeve and the transition sleeve are connected and fixed using connectors to achieve the positioning and installation of the large-diameter pipe and the small-diameter pipe with the end of the transition sleeve.

[0023] The beneficial effects of this invention are:

[0024] (1) By setting a centering component, the pipe is clamped and fixed before the installation of the thermal pipe. The centering motor drives the centering gear to rotate. The centering gear drives the inner gear ring to rotate through the outer gear ring. During the rotation of the inner gear ring, the sliding cooperation between the variable diameter arc groove and the variable diameter clamping column is used to push multiple sets of centering clamps to perform synchronous radial displacement, thereby ensuring that the clamping center of the centering clamps is always kept on the central axis of the transition pipe sleeve, and can clamp thermal pipes of different diameters, so that the large diameter pipes and small diameter pipes clamped and fixed at both ends can achieve axial alignment, which is beneficial to the installation process.

[0025] (2) By setting up a positioning component, during the installation process, the positioning motor drives the drive wheel and the hollow shaft to rotate synchronously. When the drive wheel rotates, it will drive the transition tube sleeve to rotate on the roller. When the hollow shaft rotates, it will drive the pushers at both ends to move toward the transition tube sleeve until the pushers at both ends contact the sealing tube sleeve and push the sealing tube sleeve. As the transition tube sleeve rotates, when the positioning pin is aligned with the positioning hole, the positioning pin will immediately insert into the corresponding positioning hole. At the same time, the pusher pushes the sealing tube sleeve to slide inward a distance. Then, the sealing tube sleeve and the transition tube sleeve are connected and fixed by the connector, thus realizing the positioning and installation process of the large-diameter pipe and the small-diameter pipe with the two ends of the transition tube sleeve respectively. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the transition sleeve in this invention.

[0029] Figure 3 This is a schematic diagram of the centering component in this invention.

[0030] Figure 4 yes Figure 3 A schematic diagram of the cross-section along the AA direction.

[0031] Figure 5 yes Figure 3 A schematic diagram of the cross-section in the BB direction.

[0032] Figure 6 This is an internal schematic diagram of the centering component in this invention.

[0033] Figure 7 This is a schematic diagram of the centering clamp block in this invention.

[0034] Figure 8 This is a schematic diagram of the positioning component in this invention.

[0035] Figure 9 This is a schematic diagram of the hollow rotating shaft in this invention.

[0036] In the diagram: 1. Transition sleeve; 101. Expanding pipe; 102. Positioning hole; 2. Base; 201. Roller; 3. Large-diameter pipe; 4. Small-diameter pipe; 401. Mounting flange; 402. Sealing sleeve; 4021. Positioning pin; 4022. Connector; 5. Top plate; 501. Displacement drive pair; 502. Lifting lug; 6. Centering assembly; 610. Fixed bracket; 611. Centering motor; 612. Moving seat; 613. Centering gear; 620. Cover; 630. Fixed plate; 631. First ring rail; 632. Second ring rail; 633. Synchronizing gear 634. Slide groove; 640. Internal gear ring; 641. First tooth groove; 642. Variable diameter arc groove; 650. External gear ring; 651. Second tooth groove; 652. External tooth groove; 660. Centering clamp; 661. Variable diameter clasp; 662. Return spring; 7. Positioning assembly; 701. Support frame; 702. Push frame; 703. Push block; 704. Positioning motor; 705. Drive wheel; 706. First transmission belt; 707. Hollow shaft; 708. Second transmission belt; 709. Screw sleeve; 710. Positioning screw; 711. Support guide rod; 712. Connecting shaft. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1 As shown, this invention provides a safe and economical method for installing thermal pipelines, comprising the following steps:

[0039] Step 1: Centering and clamping. The centering motor 611 drives the centering gear 613 to rotate. The centering gear 613 drives the inner gear ring 640 to rotate through the outer gear ring 650. The inner gear ring 640 drives multiple sets of centering clamps 660 to perform synchronous radial displacement. The two sets of centering components 6 respectively center and clamp the coarse-diameter pipe 3 and the fine-diameter pipe 4.

[0040] Step 2: Align the two ends. The two sets of displacement drive pairs 501 drive the positioning components 7 to move simultaneously, so that the large diameter pipe 3 and the small diameter pipe 4 gradually approach the transition sleeve 1 until the mounting flanges 401 of the large diameter pipe 3 and the small diameter pipe 4 are respectively aligned with the two ends of the diffuser 101.

[0041] Step 3: Positioning and installation. The positioning motor 704 drives the drive wheel 705 and the hollow shaft 707 to rotate synchronously. The drive wheel 705 drives the transition sleeve 1 to rotate on the roller 201. At the same time, the hollow shaft 707 drives the pushers 702 at both ends to move toward the transition sleeve 1. The pushers 703 at both ends push the corresponding sealing sleeves 402 respectively, positioning and installing the large-diameter pipe 3 and the small-diameter pipe 4 with the two ends of the transition sleeve 1 respectively.

[0042] Step 3 includes:

[0043] Step 3.1: The locating pin 4021 passes through the mounting flange 401 and abuts against the end wall of the transition sleeve 1. At the same time, the push block 703 applies a pushing force to the sealing sleeve 402. As the transition sleeve 1 rotates, when the locating pin 4021 is aligned with the locating hole 102, the locating pin 4021 will immediately insert into the corresponding locating hole 102. At the same time, the push block 703 pushes the sealing sleeve 402 to slide inward a certain distance.

[0044] Step 3.2: One end of the sealing sleeve 402 abuts against the sealing flange, and the other end of the sealing sleeve 402 abuts against the end wall of the transition sleeve 1. The sealing sleeve 402 and the transition sleeve 1 are connected and fixed by the connector 4022 to achieve the positioning and installation of the large-diameter pipe 3 and the small-diameter pipe 4 with the end of the transition sleeve 1.

[0045] like Figure 1 As shown, the installation method uses a device including a transition sleeve 1, a base 2, and a top plate 5. A roller 201 is installed on the upper end of the base 2, and the transition sleeve 1 rests on the roller 201. A gradually expanding tube 101 is coaxially arranged inside the transition sleeve 1. The top plate 5 is hoisted and fixed above the transition sleeve 1 by a hoisting lug 502. Displacement drive pairs 501 are provided at both ends of the top plate 5. Each set of displacement drive pairs 501 is connected to a centering component 6. The two sets of centering components 6 respectively clamp and fix a large-diameter pipe 3 and a small-diameter pipe 4 in the center. A mounting flange 401 is provided at the end of the large-diameter pipe 3 and the small-diameter pipe 4 facing the transition sleeve 1. A sealing sleeve 402 is fitted on the outside of the large-diameter pipe 3 and the small-diameter pipe 4. A positioning component 7 is provided at the center of the bottom of the top plate 5.

[0046] like Figures 3-7As shown, the centering assembly 6 includes a fixed bracket 610 and a housing 620. A movable seat 612 is provided at the top of the fixed bracket 610, and the movable seat 612 is connected to the displacement drive pair 501. A centering motor 611 is provided on one side of the fixed bracket 610, and a centering gear 613 is connected to the output end of the centering motor 611. A through hole for the heating pipe is provided in the center of the housing 620, and the housing 620 is coaxially arranged with the transition sleeve 1. A fixing plate 630 is fixedly installed inside the housing 620. An internal gear ring 640 and an external gear ring 650 are rotatably mounted on a fixed plate 630. Multiple centering clamps 660 are radially slidably arranged at equal intervals on the end face of the fixed plate 630. Each centering clamp 660 is provided with a diameter-changing pin 661. A diameter-changing arc groove 642 is provided through the internal gear ring 640 at equal intervals. The diameter-changing pin 661 is adapted to slide in the corresponding diameter-changing arc groove 642. The centering gear 613 drives the internal gear ring 640 to rotate through the external gear ring 650 to adjust the clamping pipe diameter.

[0047] Specifically, by setting the centering component 6, the pipe is clamped and fixed before the installation of the thermal pipe. The centering motor 611 drives the centering gear 613 to rotate. The centering gear 613 drives the inner gear ring 640 to rotate through the outer gear ring 650. During the rotation, the inner gear ring 640 uses the sliding cooperation between the variable diameter arc groove 642 and the variable diameter clamping post 661 to push multiple sets of centering clamps 660 to perform synchronous radial displacement. This ensures that the clamping center of the centering clamps 660 is always kept on the central axis of the transition sleeve 1 and can adapt to thermal pipes of different diameters. This allows the coarse-diameter pipe 3 and the fine-diameter pipe 4 clamped and fixed at both ends to achieve axial alignment, which is beneficial to the installation process.

[0048] like Figure 8 As shown, the positioning component 7 includes a support frame 701. A connecting shaft 712 is rotatably mounted on the bottom of the support frame 701. Drive wheels 705 are provided at both ends of the connecting shaft 712. The drive wheels 705 abut against the outer surface of the transition sleeve 1. A hollow shaft 707 is rotatably mounted inside the support frame 701. Positioning screws 710 are connected to both ends of the hollow shaft 707. The positioning screws 710 pass through the support frame 701 and are fixedly connected to the push frame 702. Multiple push blocks 703 are evenly spaced inside the push frame 702. A positioning motor 704 is fixedly mounted on the support frame 701. The positioning motor 704 is simultaneously connected to both the connecting shaft 712 and the hollow shaft 707.

[0049] Furthermore, such as Figure 2 As shown, positioning holes 102 are provided at equal intervals around both ends of the transition sleeve 1, and a positioning pin 4021 is provided around the end of the sealing sleeve 402 facing the transition sleeve 1. The sealing sleeve 402 is connected to the transition sleeve 1 through a connector 4022.

[0050] Specifically, by setting the positioning component 7, during the installation process, the positioning motor 704 drives the drive wheel 705 and the hollow rotating shaft 707 to rotate synchronously. When the drive wheel 705 rotates, it will drive the transition sleeve 1 to rotate on the roller 201. When the hollow rotating shaft 707 rotates, it will drive the pushers 702 at both ends to move towards the transition sleeve 1 until the pushers 703 at both ends contact the sealing sleeve 402 and push the sealing sleeve 402. As the transition sleeve 1 rotates, when the positioning pin 4021 is aligned with the positioning hole 102, the positioning pin 4021 will immediately insert into the corresponding positioning hole 102. At the same time, the pusher 703 pushes the sealing sleeve 402 to slide inward a certain distance. Then, the connecting piece 4022 is used to connect and fix the sealing sleeve 402 to the transition sleeve 1, thereby realizing the positioning and installation process of the large-diameter pipe 3 and the small-diameter pipe 4 with the two ends of the transition sleeve 1 respectively.

[0051] like Figure 6 As shown, the inner toothed ring 640 has a first toothed groove 641 circumferentially arranged on its inner side, and the outer toothed ring 650 has a second toothed groove 651 circumferentially arranged on its inner side. Synchronous gears 633 are circumferentially rotatably mounted on the fixing plate 630 at equal intervals. The synchronous gears 633 mesh with the first toothed groove 641 and the second toothed groove 651 simultaneously. The outer toothed ring 650 has an outer toothed groove 652 circumferentially arranged on its outer side, and the centering gear 613 meshes with the outer toothed groove 652.

[0052] like Figure 7 As shown, a first ring rail 631 and a second ring rail 632 are respectively provided on the end face of the fixing plate 630. The inner toothed ring 640 is rotatably engaged with the first ring rail 631, and the outer toothed ring 650 is rotatably engaged with the second ring rail 632.

[0053] Furthermore, the fixed plate 630 is provided with equally spaced sliding grooves 634, and the centering clamp 660 is adapted to slide and install in the corresponding sliding groove 634. A return spring 662 is provided between the centering clamp 660 and the end wall of the sliding groove 634.

[0054] Specifically, by setting an external gear ring 650 and an internal gear ring 640, when the centering gear 613 drives the external gear ring 650 to rotate, the external gear ring 650 will drive multiple sets of synchronous gears 633 to rotate through the second tooth groove 651. The multiple sets of synchronous gears 633 will simultaneously drive the internal gear ring 640 to rotate. Compared with the structure in which the centering gear 613 directly drives the internal gear ring 640 to rotate, the transmission structure of the external gear ring 650 and the synchronous gears 633 can effectively increase the number of force application points of the internal gear ring 640, and the force application points are evenly distributed. With the cooperation of the first ring rail 631 and the second ring rail 632, the stability of the internal gear ring 640 during rotation can be greatly improved.

[0055] like Figure 9As shown, the output end of the positioning motor 704 is connected to a first transmission belt 706 and a second transmission belt 708 respectively. The first transmission belt 706 is connected to the connecting shaft 712, and the second transmission belt 708 is connected to the hollow shaft 707. The hollow shaft 707 is fixedly provided with threaded sleeves 709 at both ends, and the positioning screws 710 are threaded through the corresponding threaded sleeves 709 respectively.

[0056] Furthermore, support guide rods 711 are fixedly connected to both ends of the support frame 701, and the support guide rods 711 slide through the corresponding push frame 702.

[0057] Specifically, the positioning motor 704 drives the connecting shaft 712 to rotate via the first transmission belt 706 and the hollow shaft 707 to rotate via the second transmission belt 708. Both rotate synchronously. When the hollow shaft 707 rotates, it drives the threaded sleeves 709 at both ends to rotate simultaneously. Since the threaded sleeves 709 are threadedly engaged with the positioning screw 710, they push the positioning screw 710 to perform a linear displacement. The positioning screw 710 then pulls the push frame 702 closer to the sealing sleeve 402, allowing the push frames 702 at both ends to exert a pushing effect on the sealing sleeve 402. During movement, the push frame 702 will always slide on the support guide rod 711. The support guide rod 711 provides support and guidance, effectively improving the stability of the push frame 702 during movement.

[0058] The working principle of this invention is as follows: First, the centering motor 611 drives the centering gear 613 to rotate. The centering gear 613 drives the inner gear ring 640 to rotate through the outer gear ring 650. The inner gear ring 640 drives multiple sets of centering clamps 660 to perform synchronous radial displacement. The two sets of centering components 6 respectively center and clamp the coarse-diameter pipe 3 and the fine-diameter pipe 4. Then, the two sets of displacement drive pairs 501 respectively drive the positioning components 7 to move simultaneously, so that the coarse-diameter pipe 3 and the fine-diameter pipe 4 gradually approach the transition sleeve 1 until the mounting flanges 401 of the coarse-diameter pipe 3 and the fine-diameter pipe 4 are respectively aligned and abutted against the two ends of the diffuser 101. Finally, the positioning motor 704 drives the drive wheel 705 and the hollow shaft 707 to rotate synchronously. The drive wheel 705 drives the transition sleeve 1 to rotate on the roller 201. At the same time, the hollow shaft 707 drives the pushers 702 at both ends to move toward the transition sleeve 1. The pushers 703 at both ends push the corresponding sealing sleeves 402 respectively, positioning and installing the large-diameter pipe 3 and the small-diameter pipe 4 with the two ends of the transition sleeve 1. During the positioning and installation process, the positioning pin 4021 passes through the mounting flange 401 and abuts against the end wall of the transition sleeve 1. At the same time, the pushers 703 push the sealing sleeves 402. When the sleeve 402 applies a thrust, as the transition sleeve 1 rotates, when the positioning pin 4021 aligns with the positioning hole 102, the positioning pin 4021 will immediately insert into the corresponding positioning hole 102. At the same time, the push block 703 pushes the sealing sleeve 402 to slide inward a certain distance. One end of the sealing sleeve 402 abuts against the sealing flange, and the other end of the sealing sleeve 402 abuts against the end wall of the transition sleeve 1. The sealing sleeve 402 is connected and fixed to the transition sleeve 1 by the connector 4022, so as to realize the positioning and installation of the large diameter pipe 3 and the small diameter pipe 4 with the end of the transition sleeve 1.

[0059] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A safe and economical method for installing thermal pipelines, characterized in that, The installation method employs a device comprising a transition sleeve (1), a base (2), and a top plate (5). A roller (201) is mounted on the upper end of the base (2), and the transition sleeve (1) rests on the roller (201). A gradually expanding tube (101) is coaxially arranged inside the transition sleeve (1). The top plate (5) is suspended and fixed above the transition sleeve (1) via a lifting lug (502). Displacement drive pairs (501) are provided at both ends of the top plate (5). Each set... The displacement drive pair (501) is connected to a centering assembly (6). The two sets of centering assemblies (6) clamp and fix a large-diameter pipe (3) and a small-diameter pipe (4) respectively. The large-diameter pipe (3) and the small-diameter pipe (4) are provided with a mounting flange (401) at the end facing the transition sleeve (1). The large-diameter pipe (3) and the small-diameter pipe (4) are both fitted with a sealing sleeve (402) on the outside. The top plate (5) is provided with a positioning assembly (7) at the bottom center. The centering assembly (6) includes a fixed bracket (610) and a cover (620). A movable seat (612) is provided at the top of the fixed bracket (610), and the movable seat (612) is connected to a displacement drive pair (501). A centering motor (611) is provided on one side of the fixed bracket (610), and a centering gear (613) is connected to the output end of the centering motor (611). A through hole for the heating pipe is provided in the center of the cover (620), and the cover (620) is coaxially arranged with the transition sleeve (1). A fixing plate (6) is fixedly installed inside the cover (620). 30) An internal gear ring (640) and an external gear ring (650) are rotatably mounted on the fixing plate (630). Multiple centering clamps (660) are radially slidably arranged at equal intervals on the end face of the fixing plate (630). Each centering clamp (660) is provided with a diameter-changing pin (661). A diameter-changing arc groove (642) is provided through the internal gear ring (640) at equal intervals. The diameter-changing pin (661) is adapted to slide in the corresponding diameter-changing arc groove (642). The centering gear (613) drives the internal gear ring (640) to rotate through the external gear ring (650) to adjust the clamping pipe diameter. The positioning component (7) includes a support frame (701), a connecting shaft (712) is rotatably mounted on the bottom of the support frame (701), and drive wheels (705) are provided at both ends of the connecting shaft (712). The drive wheels (705) are attached to the outer surface of the transition sleeve (1). A hollow shaft (707) is rotatably mounted inside the support frame (701). A positioning screw (710) is connected to both ends of the hollow shaft (707). The positioning screw (710) passes through the support frame (701) and is fixedly connected to the push frame (702). Multiple push blocks (703) are evenly spaced inside the push frame (702). A positioning motor (704) is fixedly mounted on the support frame (701). The positioning motor (704) is simultaneously connected to the connecting shaft (712) and the hollow shaft (707) for transmission. The installation method includes the following steps: Step 1: Centering and clamping. The centering motor (611) drives the centering gear (613) to rotate. The centering gear (613) drives the internal gear ring (640) to rotate through the external gear ring (650). The internal gear ring (640) drives multiple sets of centering clamps (660) to perform synchronous radial displacement. The two sets of centering components (6) respectively center and clamp the large-diameter pipe (3) and the small-diameter pipe (4). Step 2: Align the two ends, and the two sets of displacement drive pairs (501) drive the positioning components (7) to move simultaneously, so that the large diameter pipe (3) and the small diameter pipe (4) gradually approach the transition sleeve (1) until the mounting flanges (401) of the large diameter pipe (3) and the small diameter pipe (4) are respectively aligned with the two ends of the diffuser (101). Step 3, Positioning and Installation: The positioning motor (704) drives the drive wheel (705) and the hollow shaft (707) to rotate synchronously. The drive wheel (705) drives the transition sleeve (1) to rotate on the roller (201). At the same time, the hollow shaft (707) drives the pushers (702) at both ends to move toward the transition sleeve (1). The pushers (703) at both ends push the corresponding sealing sleeves (402) respectively, positioning and installing the large-diameter pipe (3) and the small-diameter pipe (4) with the two ends of the transition sleeve (1) respectively.

2. The safe and economical method for installing thermal pipelines according to claim 1, characterized in that, The inner toothed ring (640) has a first tooth groove (641) circumferentially arranged on its inner side, and the outer toothed ring (650) has a second tooth groove (651) circumferentially arranged on its inner side. Synchronous gears (633) are circumferentially rotatably mounted on the fixing plate (630) at equal intervals. The synchronous gears (633) mesh with the first tooth groove (641) and the second tooth groove (651) simultaneously. The outer toothed ring (650) has an outer tooth groove (652) circumferentially arranged on its outer side, and the centering gear (613) meshes with the outer tooth groove (652).

3. The safe and economical method for installing thermal pipelines according to claim 2, characterized in that, The fixed plate (630) is provided with a first ring rail (631) and a second ring rail (632) on its end face respectively. The internal toothed ring (640) is rotatably engaged with the first ring rail (631), and the external toothed ring (650) is rotatably engaged with the second ring rail (632).

4. The safe and economical method for installing thermal pipelines according to claim 3, characterized in that, The fixed plate (630) is provided with equally spaced sliding grooves (634), and the centering clamp (660) is adapted to slide and install in the corresponding sliding groove (634). A return spring (662) is provided between the centering clamp (660) and the end wall of the sliding groove (634).

5. The safe and economical method for installing a thermal pipeline according to claim 1, characterized in that, The output end of the positioning motor (704) is connected to a first transmission belt (706) and a second transmission belt (708). The first transmission belt (706) is connected to a connecting shaft (712), and the second transmission belt (708) is connected to a hollow shaft (707). Both ends of the hollow shaft (707) are fixedly provided with threaded sleeves (709), and the positioning screw (710) is threaded through the corresponding threaded sleeves (709).

6. The safe and economical method for installing a thermal pipeline according to claim 5, characterized in that, The support frame (701) is fixedly connected to two ends of a support guide rod (711), which slides through the corresponding push frame (702).

7. The safe and economical method for installing thermal pipelines according to claim 1, characterized in that, The transition sleeve (1) has positioning holes (102) at equal intervals around its two ends. The sealing sleeve (402) has a positioning pin (4021) around its end facing the transition sleeve (1). The sealing sleeve (402) is connected to the transition sleeve (1) through a connector (4022).

8. The safe and economical method for installing a thermal pipeline according to claim 7, characterized in that, Step 3 includes: Step 3.1: The positioning pin (4021) passes through the mounting flange (401) and abuts against the end wall of the transition sleeve (1). At the same time, the push block (703) applies a pushing force to the sealing sleeve (402). As the transition sleeve (1) rotates, when the positioning pin (4021) is aligned with the positioning hole (102), the positioning pin (4021) will immediately be inserted into the corresponding positioning hole (102). At the same time, the push block (703) pushes the sealing sleeve (402) to slide inward a certain distance. Step 3.2: One end of the sealing sleeve (402) abuts against the sealing flange, and the other end of the sealing sleeve (402) abuts against the end wall of the transition sleeve (1). The sealing sleeve (402) and the transition sleeve (1) are connected and fixed by the connector (4022) to achieve the positioning and installation of the large diameter pipe (3) and the small diameter pipe (4) with the end of the transition sleeve (1).

Images