Pipeline mounting device for fire engineering

Abstract

The invention relates to the field of pipeline installation, in particular to a pipeline installation device for fire protection engineering, which is characterized in that concentricity correction of an installed pipeline and a to-be-installed pipeline is realized through an in-pipe correction machine, and on the basis that a first clamping cylinder is fixed with the installed pipeline, a second clamping cylinder is driven by an electric telescopic cylinder to extend into the to-be-installed pipeline; then, the to-be-mounted pipeline is extruded and pushed through the clamping blocks, moving in the radial direction, of the second clamping barrel, and the good adjacent pipeline concentricity correction effect is achieved; meanwhile, the installed pipeline and the to-be-installed pipeline are axially fixed through the pipeline straightening machine, and the stability of the pipeline when the groove connecting piece is installed is improved; in addition, the continuous straightening operation of the pipeline is realized by utilizing the movement of the in-pipe straightening machine in the pipeline; in addition, accurate adjustment of the groove reserved gap is achieved through cooperation of the reserved gap monitoring mechanism and the electric telescopic cylinder, and the installation quality of the groove connecting piece is further improved.

Description

Technical Field

[0001] The present invention relates to a pipeline installation device, in particular to a pipeline installation device for fire protection engineering applied in the field of pipeline installation. Background Art

[0002] In the fire protection pipeline project, it is necessary to install the pipeline on the hanger or the wall support frame, and then connect and install the pipeline through connection methods such as welding connection, flange connection, and groove connection. Among them, the pipeline groove connection adopts the method of opening grooves on the two butt-jointed pipelines and using sealing rings and locking clamps for clamping. The pipe concentricity has a great influence on the installation quality of the groove connectors. The docking of the existing pipelines adopts manual handling to correct the concentricity of the pipelines, and the correction error is relatively large.

[0003] The patent with the publication number CN113418054B discloses a pipeline installation device for fire protection engineering, belonging to the field of installation engineering. It includes an installation seat, and a placement groove for placing elbows is opened on the top surface of the installation seat. Connecting rods are arranged on two adjacent side walls of the installation seat, and the two connecting rods are respectively located in the extending directions at both ends of the elbow. An installation frame is arranged at the end of the connecting rod away from the installation seat. A pressing component for pressing against the pipeline support is arranged on the installation frame. A pipe straightening mechanism for straightening the fire protection pipeline is arranged on the side of the installation frame facing the installation seat. A clamping mechanism for clamping the fire protection pipeline is arranged on the side of the installation frame away from the installation seat. This application has the effect of facilitating the connection of the fire protection pipeline and the elbow.

[0004] The above-mentioned prior art discloses the use of a clamping fixture to straighten and pull the connected pipelines to improve the docking quality of the pipelines. However, in actual use, the installation and disassembly of the clamping fixture need to be carried out at each pipeline connection position, the operation is cumbersome, and there are installation errors in the fixture itself, reducing the pipe concentricity of the pipeline docking. Summary of the Invention

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that the operation of the existing fire protection pipeline installation device is cumbersome and the effect of improving the docking quality is limited.

[0006] To solve the above problems, the present invention provides a pipeline installation device for fire protection engineering, including an in-pipe straightening machine and a wireless control terminal; the in-pipe straightening machine includes a first cartridge and a second cartridge with the same structure and an electric telescopic cylinder arranged between the two. The electric telescopic cylinder is used to adjust the distance between the first cartridge and the second cartridge;

[0007] The first cartridge includes a cylinder body, and a plurality of clamping blocks are arranged on the outer side of the cylinder body at equal circumferential intervals. A plurality of clamping blocks are connected with a radial driving mechanism for driving the plurality of clamping blocks to move synchronously in the radial direction. When the radial driving mechanism drives the clamping blocks to move radially, the clamping blocks abut against the inner wall of the fire pipeline to realize the extrusion fixation of the first cartridge and the fire pipeline;

[0008] A controller and a storage battery are fixedly connected inside the cylinder body. The radial driving mechanism and the electric telescopic cylinder are both electrically connected to the controller. The controller includes a wireless communication module, and the wireless communication module communicates with a wireless control terminal through a wireless network. The storage battery provides power for the rectifier.

[0009] In the above pipeline installation device for fire protection engineering, the concentricity of the pipeline to be installed and the installed pipeline is accurately adjusted by the in-pipe rectifier.

[0010] As a further improvement of the present application, the electric telescopic cylinder includes a fixed cylinder fixedly connected to the first cartridge. A sliding cylinder is slidably connected inside the fixed cylinder. The sliding cylinder extends to the outside of the fixed cylinder and is fixedly connected to the second cartridge. A first electric telescopic rod fixedly connected to the first cartridge is arranged inside the fixed cylinder. The movable end of the first electric telescopic rod is fixedly connected to the inner wall of the sliding cylinder.

[0011] As a further improvement of the present application, a first infrared distance sensor is fixedly nested on the outer wall of the second cartridge close to the electric telescopic cylinder side. The first electric telescopic rod is equipped with a first Hall sensor for monitoring the telescopic length of the first electric telescopic rod. Both the first infrared distance sensor and the first Hall sensor are electrically connected to the controller.

[0012] As a further improvement of the present application, a seam monitoring mechanism is fixedly connected to the electric telescopic cylinder. The seam monitoring mechanism includes a sliding groove. A moving block is slidably connected inside the sliding groove. The moving block is fixedly connected with a second infrared distance sensor; the moving block is fixedly connected with the movable end of a second electric telescopic rod. The second electric telescopic rod is fixedly connected with the sliding groove; a second Hall sensor for monitoring the telescopic length of the second electric telescopic rod is installed inside the second electric telescopic rod. The second infrared distance sensor, the second electric telescopic rod and the second Hall sensor are all electrically connected to the controller.

[0013] As a further improvement of the present application, the radial driving mechanism includes multiple groups of connecting rods hinged to the inner walls of multiple clamping blocks. Each group of connecting rods is radially symmetric with respect to the central interface of the clamping block. A plurality of connecting rods on the same side of the central section of the clamping block are all hinged to the same moving disk. The moving disk is slidably connected to the inner wall of the cylinder body and is threadedly connected with a bidirectional lead screw. The bidirectional lead screw is connected to the output shaft of a lead screw motor. The lead screw motor is fixedly connected to the outer wall of the cylinder body.

[0014] As a further improvement of the present application, the cylinder body is a horizontally cylindrical structure, the clamping block is an arc-shaped block with an isosceles trapezoid cross-section, and at least one pressure sensor is fixedly nested on the outer wall of the clamping block, and an anti-slip pad is fixedly connected to the outer wall of the clamping block.

[0015] As a further improvement of the present application, the following steps are included during use:

[0016] Step 1, place the in-pipe straightening machine; completely place the in-pipe straightening machine into the installed pipeline.

[0017] Step 2, hoist the pipeline to be installed; place the pipeline to be installed on the hanger on the opposite side of the installed pipeline, and make the port of the pipeline to be installed opposite to the port of the installed pipeline.

[0018] Step 3, straightening operation; includes the following sub-steps:

[0019] S1, start the radial driving mechanism of the first cartridge through the wireless control terminal, so that the first cartridge is squeezed and fixed with the installed pipeline.

[0020] S2, start the electric telescopic cylinder, and the electric telescopic cylinder pushes the second cartridge into the pipeline to be installed.

[0021] S3, start the radial driving mechanism of the second cartridge, and make the radial moving distance of the clamping block of the second cartridge the same as the radial moving distance of the clamping block of the first cartridge, and complete the straightening of the concentricity of the pipeline to be installed.

[0022] Step 4, install the groove sealing ring and the hoop.

[0023] Step 5, the in-pipe straightening machine goes to the next installation port of the pipeline; hold the wireless control terminal and alternately start the radial driving mechanisms of the first cartridge and the second cartridge and the electric telescopic cylinder, so that the in-pipe straightening machine moves in the installed pipeline until the in-pipe straightening machine moves to the next installation port.

[0024] In summary, the present invention realizes the correction of the concentricity of the installed pipeline and the pipeline to be installed through an in-pipe aligner. On the basis of fixing the first cartridge to the installed pipeline, the electric telescopic cylinder is used to drive the second cartridge to extend into the pipeline to be installed, and then the block that moves radially on the second cartridge is used to extrude and push the pipeline to be installed, so that the central axis of the pipeline to be installed gradually coincides with the central axis of the installed pipeline, with a good concentricity correction effect, thereby improving the installation quality of the groove connectors. At the same time, after the pipeline concentricity correction is completed, the pipeline aligner is used to axially fix the installed pipeline and the pipeline to be installed, improving the stability of the pipeline when installing the groove connectors and further improving the installation quality of the groove connectors. In addition, by alternately starting the radial drive mechanisms of the first cartridge and the second cartridge and the electric telescopic cylinder, the in-pipe aligner is moved inside the pipeline without frequent disassembly, improving the overall efficiency of pipeline connection and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0026] Figure 2 is an internal structural schematic diagram of the in-pipe aligner in the present application;

[0027] Figure 3 is an exploded assembly schematic diagram of the first cartridge in the present application;

[0028] Figure 4 is a schematic diagram of the state where the first cartridge is internally extruded and fixed to the inner wall of the installed pipeline;

[0029] Figure 5 is a schematic diagram of the monitoring state of the groove gap by the gap monitoring mechanism.

[0030] Description of the reference numerals in the drawings:

[0031] 1. First cartridge; 2. Second cartridge; 3. Electric telescopic cylinder; 4. Wireless control terminal; 5. Cylinder body; 6. Block; 7. Link; 8. Moving disk; 9. Bidirectional lead screw; 10. Lead screw motor; 11. Pressure sensor; 12. Fixed cylinder; 13. Sliding cylinder; 14. First electric telescopic rod; 15. Controller; 16. Battery; 17. First infrared distance sensor; 18. Second infrared distance sensor; 19. Moving block; 20. Sliding groove; 21. Second electric telescopic rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following describes two embodiments of the present application in detail with reference to the drawings.

[0033] The first embodiment:

[0034] Figures 1-5There is shown a pipe installation device for a fire protection project, including an in-pipe straightening machine and a wireless control terminal 4; the in-pipe straightening machine includes a first clamping cylinder 1 and a second clamping cylinder 2 with the same structure, and an electric telescopic cylinder 3 arranged between the two, and the electric telescopic cylinder 3 is used to adjust the distance between the first clamping cylinder 1 and the second clamping cylinder 2;

[0035] Please refer to Figure 2 and Figure 4 , the first clamping cylinder 1 includes a cylinder body 5, and a plurality of clamping blocks 6 are arranged on the outer side of the cylinder body 5 at equal circumferential intervals. A radial driving mechanism for driving the plurality of clamping blocks 6 to move synchronously in the radial direction is connected to the plurality of clamping blocks 6. When the radial driving mechanism drives the clamping blocks 6 to move radially, the clamping blocks 6 abut against the inner wall of the fire protection pipe, and the first clamping cylinder 1 is fixed by extrusion with the fire protection pipe;

[0036] Please refer to Figure 2 , a controller 15 and a storage battery 16 are fixedly connected inside the cylinder body 5. The radial driving mechanism and the electric telescopic cylinder 3 are both electrically connected to the controller 15. The controller 15 includes a wireless communication module, and the wireless communication module communicates with the wireless control terminal 4 through a wireless network. The storage battery 16 provides power for the straightening machine.

[0037] Specifically, please refer to Figure 4 and Figure 5 , when in use, it includes the following steps:

[0038] Step 1, put the in-pipe straightening machine; completely put the in-pipe straightening machine into the installed pipe;

[0039] Step 2, hoist the pipe to be installed; place the pipe to be installed on the hanger on the opposite side of the installed pipe, and make the port of the pipe to be installed opposite to the port of the installed pipe;

[0040] Step 3, straightening operation; includes the following sub-steps:

[0041] S1, start the radial driving mechanism of the first clamping cylinder 1 through the wireless control terminal 4, so that the first clamping cylinder 1 is fixed by extrusion with the installed pipe;

[0042] S2, start the electric telescopic cylinder 3, and the electric telescopic cylinder 3 pushes the second clamping cylinder 2 into the pipe to be installed;

[0043] S3, start the radial driving mechanism of the second clamping cylinder 2, and make the radial moving distance of the clamping blocks 6 of the second clamping cylinder 2 the same as the radial moving distance of the clamping blocks 6 of the first clamping cylinder 1, and complete the straightening of the concentricity of the pipe to be installed;

[0044] Specifically, since the first cartridge 1 is fixedly connected to the installed pipeline, when the clamping blocks 6 of the second cartridge 2 move radially and contact the inner wall of the pipeline to be installed, due to the circumferentially equidistant distribution of the clamping blocks 6, the clamping blocks 6 push the pipeline to be installed to move, so that the central axis of the pipeline to be installed moves towards the central axis of the installed pipeline until the inner wall of the pipeline to be installed evenly contacts the clamping blocks 6 of the second cartridge 2. At this time, the central axis of the pipeline to be installed coincides with the central axis of the installed pipeline, and the concentricity correction is completed;

[0045] Step Four, install the grooved sealing ring and the hoop;

[0046] Specifically, the installed pipeline and the pipeline to be installed are fixed by the in-pipe aligner, improving the installation stability and quality of the grooved connectors;

[0047] Step Five, the in-pipe aligner moves to the next installation port of the pipeline; hold the wireless control terminal 4 and alternately start the radial drive mechanisms of the first cartridge 1 and the second cartridge 2 and the electric telescopic cylinder 3, so that the in-pipe aligner moves in the installed pipeline until the in-pipe aligner moves to the next installation port.

[0048] Specifically, please refer to Figure 4 and Figure 5 , when the in-pipe aligner moves in the installed pipeline, it includes the following steps:

[0049] A1, start the radial drive mechanism of the first cartridge 1 so that the first cartridge 1 is disengaged from the inner wall of the pipeline;

[0050] A2, start the electric telescopic cylinder 3 so that the first cartridge 1 moves closer to the second cartridge 2, and then turn off the electric telescopic cylinder 3;

[0051] A3, start the radial drive mechanism of the first cartridge 1 again so that the first cartridge 1 is fixedly connected to the pipeline;

[0052] A4, start the radial drive mechanism of the second cartridge 2 so that the second cartridge 2 is disengaged from the pipeline;

[0053] A5, start the electric telescopic cylinder 3 so that the second cartridge 2 moves towards the next pipeline installation port, and then turn off the electric telescopic cylinder 3;

[0054] A6, start the radial drive mechanism of the second cartridge 2 so that the second cartridge 2 is pressed and fixed to the inner wall of the pipeline;

[0055] A7, repeat steps A1 to A6 so that the first cartridge 1 and the second cartridge 2 alternately move forward in the pipeline until the in-pipe aligner moves to the next installation port.

[0056] Compared with the traditional pipeline adjustment tooling, the present invention realizes the correction of the concentricity of the installed pipeline and the pipeline to be installed through an in-pipe straightening machine. On the basis of fixing the first clamping cylinder 1 to the installed pipeline, the electric telescopic cylinder 3 is used to drive the second clamping cylinder 2 to extend into the pipeline to be installed, and then the clamping block 6 that moves radially on the second clamping cylinder 2 is used to squeeze and push the pipeline to be installed, so that the central axis of the pipeline to be installed gradually coincides with the central axis of the installed pipeline, having a good concentricity correction effect and improving the installation quality of the groove connector. At the same time, after the pipeline concentricity correction is completed, the pipeline straightening machine is used to axially fix the installed pipeline and the pipeline to be installed, improving the stability of the pipeline when installing the groove connector and further improving the installation quality of the groove connector. In addition, by alternately starting the radial drive mechanisms of the first clamping cylinder 1 and the second clamping cylinder 2 and the electric telescopic cylinder 3, the in-pipe straightening machine is moved inside the pipeline, without frequent disassembly, improving the overall efficiency of pipeline connection and installation.

[0057] Please refer to Figure 3 , the radial drive mechanism includes multiple groups of connecting rods 7 hinged to the inner walls of the multiple clamping blocks 6. Each group of connecting rods 7 is radially symmetric with respect to the central interface of the clamping block 6. The multiple connecting rods 7 located on the same side of the central section of the clamping block 6 are all hinged to the same moving disk 8. The moving disk 8 is slidably connected to the inner wall of the cylinder body 5 and is threadedly connected with a bidirectional lead screw 9. The bidirectional lead screw 9 is connected to the output shaft of a lead screw motor 10, and the lead screw motor 10 is fixedly connected to the outer wall of the cylinder body 5.

[0058] Specifically, the lead screw motor 10 drives the bidirectional lead screw 9 to rotate. The bidirectional lead screw 9 drives a pair of moving disks 8 to move towards or away from each other. The pair of moving disks 8 drives multiple groups of connecting rods 7 to move. The multiple groups of connecting rods 7 drive the multiple clamping blocks 6 to move radially. The fixation of the first clamping cylinder 1 and the second clamping cylinder 2 is realized through the extrusion of the clamping blocks 6 against the inner wall of the pipeline.

[0059] Please refer to Figure 2 , the electric telescopic cylinder 3 includes a fixed cylinder 12 fixedly connected to the first clamping cylinder 1. A sliding cylinder 13 is slidably connected inside the fixed cylinder 12. The sliding cylinder 13 extends to the outside of the fixed cylinder 12 and is fixedly connected to the second clamping cylinder 2. A first electric telescopic rod 14 fixedly connected to the first clamping cylinder 1 is provided inside the fixed cylinder 12. The movable end of the first electric telescopic rod 14 is fixedly connected to the inner wall of the sliding cylinder 13.

[0060] Specifically, the first electric telescopic rod 14 drives the sliding cylinder 13 to move. The sliding cylinder 13 drives the second clamping cylinder 2 to move, realizing the adjustment of the distance between the first clamping cylinder 1 and the second clamping cylinder 2.

[0061] Please refer to Figure 3 , the cylinder body 5 is a horizontally cylindrical structure. The clamping block 6 is an arc-shaped block with an isosceles trapezoidal cross-section. At least one pressure sensor 11 is fixedly nested on the outer wall of the clamping block 6. An anti-slip pad is fixedly connected to the outer wall of the clamping block 6.

[0062] Specifically, the contact pressure between the clamping block 6 and the inner wall of the pipeline is monitored in real time through the pressure sensor 11 to ensure the contact pressure between the clamping block 6 and the inner wall of the pipeline, thereby improving the stability of the extrusion fixation of the clamping block 6.

[0063] The second implementation mode:

[0064] Figure 2 、 Figure 4 and Figure 5 Shown is a pipeline installation device for fire protection engineering. On the basis of the first implementation mode, a first infrared distance sensor 17 is fixedly nested on the outer wall of the second cartridge 2 close to the electric telescopic cylinder 3. A first Hall sensor for monitoring the telescopic length of the first electric telescopic rod 14 is installed on the first electric telescopic rod 14. Both the first infrared distance sensor 17 and the first Hall sensor are electrically connected to the controller 15.

[0065] Specifically, when the first cartridge 1 is fixed to the inner wall of the installed pipeline, the value of the first infrared distance sensor 17 is defined as the initial value. When the second cartridge 2 passes through the gap between the installed pipeline and the pipeline to be installed, the value of the first infrared distance sensor 17 changes suddenly. When the second cartridge 2 completely enters the pipeline to be installed, the value of the first infrared distance sensor 17 returns to the initial value, thereby determining whether the second cartridge 2 completely enters the pipeline to be installed. At the same time, the telescopic amount of the first electric telescopic rod 14 is monitored by the first Hall sensor installed in the first electric telescopic rod 14. In cooperation with the first infrared distance sensor, the distance that the second cartridge 2 extends into the pipeline to be installed can be calculated. The more specific calculation principle is as follows: The controller 15 includes a timing module, and the telescopic speed of the first electric telescopic rod 14 is known. By counting the mutation time of the value of the second infrared sensor 17 and the telescopic time of the first electric telescopic rod 14 after the mutation returns to the initial value, the distance that the second cartridge 2 enters the pipeline to be installed can be calculated.

[0066] Please refer to Figure 2 and Figure 5 As shown in, a gap monitoring mechanism is fixedly connected to the electric telescopic cylinder 3. The gap monitoring mechanism includes a sliding groove 20. A moving block 19 is slidably connected in the sliding groove 20. The moving block 19 is fixedly connected with a second infrared distance sensor 18. The moving block 19 is fixedly connected with the movable end of a second electric telescopic rod 21. The second electric telescopic rod 21 is fixedly connected with the sliding groove 20. A second Hall sensor for monitoring the telescopic length of the second electric telescopic rod 21 is installed in the second electric telescopic rod 21. The second infrared distance sensor 18, the second electric telescopic rod 21 and the second Hall sensor are all electrically connected to the controller 15.

[0067] Specifically, by controlling the telescopic length of the first electric telescopic rod 14, the second infrared distance sensor 18 is moved below the gap; then the second electric telescopic rod 21 and the second infrared distance sensor 18 are started, so that the second infrared distance sensor 18 reciprocates below the gap. Based on the duration of the numerical mutation when the second infrared distance sensor 18 passes through the gap recorded by the timing module of the controller 15 and the telescopic speed of the second electric telescopic rod 21, the width of the groove gap can be calculated, compared with the set width of the pipeline groove gap, and then the width of the gap is adjusted by the telescopic movement of the first electric telescopic rod 14 of the electric telescopic cylinder 3;

[0068] More specifically, generally, the width of the groove gap required by the groove connector is two to three millimeters. When the measured width of the groove gap is greater than the required value, the first electric telescopic rod 14 is started, so that the electric telescopic cylinder 3 drives the second clamping cylinder 2 to move towards the first clamping cylinder 1. At the same time, the second clamping cylinder 2 drives the pipeline to be installed fixed to it to move towards the installed pipeline, realizing the precise adjustment of the width of the groove gap, further improving the installation quality of the groove connector and the sealing performance at the groove connection;

[0069] It should be noted that the groove gap refers to the axial distance between the two end faces on the opposite sides of the installed pipeline and the pipeline to be installed. Generally, the end faces between the two pipelines do not contact. On the one hand, it enables the sealing ring to be fully filled and sealed at the joints of the two pipelines when being squeezed by the hoop. On the other hand, when the pipeline is impacted and the pipeline is displaced, leakage will not occur, improving the sealing effect. This is the prior art and will not be elaborated in this application.

[0070] Combined with the current actual requirements, the above-mentioned implementation mode adopted in this application, the protection scope is not limited to this. Within the knowledge scope of those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A pipeline installation device for fire protection engineering, characterized in that, It includes an in-pipe straightening machine and a wireless control terminal (4); the in-pipe straightening machine includes a first clamping cylinder (1) and a second clamping cylinder (2) with the same structure, and an electric telescopic cylinder (3) arranged between the two. The electric telescopic cylinder (3) is used to adjust the distance between the first clamping cylinder (1) and the second clamping cylinder (2). The first clamping cylinder (1) includes a cylinder body (5). A plurality of clamping blocks (6) are arranged on the outer side of the cylinder body (5) at equal circumferential intervals. A radial driving mechanism for driving the plurality of clamping blocks (6) to move synchronously in the radial direction is connected to the plurality of clamping blocks (6). When the radial driving mechanism drives the clamping blocks (6) to move radially, the clamping blocks (6) abut against the inner wall of the fire pipeline to realize the extrusion fixation of the first clamping cylinder (1) and the fire pipeline. A controller (15) and a storage battery (16) are fixedly connected inside the cylinder body (5). The radial driving mechanism and the electric telescopic cylinder (3) are both electrically connected to the controller (15). The controller (15) includes a wireless communication module. The wireless communication module communicates with the wireless control terminal (4) through a wireless network. The storage battery (16) provides power for the straightening machine.

2. The pipe installation device for fire protection engineering according to claim 1, characterized in that, The electric telescopic cylinder (3) includes a fixed cylinder (12) fixedly connected to the first clamping cylinder (1). A sliding cylinder (13) is slidably connected inside the fixed cylinder (12). The sliding cylinder (13) extends to the outside of the fixed cylinder (12) and is fixedly connected to the second clamping cylinder (2). A first electric telescopic rod (14) fixedly connected to the first clamping cylinder (1) is arranged inside the fixed cylinder (12). The movable end of the first electric telescopic rod (14) is fixedly connected to the inner wall of the sliding cylinder (13).

3. The pipe installation device for a fire protection project according to claim 2, wherein, A first infrared distance sensor (17) is fixedly nested on the outer wall of the second clamping cylinder (2) close to the electric telescopic cylinder (3). A first Hall sensor for monitoring the telescopic length of the first electric telescopic rod (14) is installed on the first electric telescopic rod (14). The first infrared distance sensor (17) and the first Hall sensor are both electrically connected to the controller (15).

4. The pipe installation device for a fire protection project according to claim 3, characterized in that, A gap monitoring mechanism is fixedly connected to the electric telescopic cylinder (3). The gap monitoring mechanism includes a sliding groove (20). A moving block (19) is slidably connected inside the sliding groove (20). The moving block (19) is fixedly connected to a second infrared distance sensor (18); the moving block (19) is fixedly connected to the movable end of a second electric telescopic rod (21). The second electric telescopic rod (21) is fixedly connected to the sliding groove (20); a second Hall sensor for monitoring the telescopic length of the second electric telescopic rod (21) is installed inside the second electric telescopic rod (21). The second infrared distance sensor (18), the second electric telescopic rod (21) and the second Hall sensor are all electrically connected to the controller (15).

5. The pipe installation device for a fire protection project according to claim 1, wherein, The radial driving mechanism includes multiple groups of connecting rods (7) hinged to the inner walls of multiple clamping blocks (6). Each group of connecting rods (7) is radially symmetric with respect to the central interface of the clamping block (6). A plurality of connecting rods (7) located on the same side of the central section of the clamping block (6) are all hinged to the same moving disk (8). The moving disk (8) is slidably connected to the inner wall of the cylinder body (5) and is threadedly connected with a bidirectional lead screw (9). The bidirectional lead screw (9) is connected to the output shaft of a lead screw motor (10), and the lead screw motor (10) is fixedly connected to the outer wall of the cylinder body (5).

6. The pipe installation device for a fire protection project according to claim 1, characterized in that, The cylinder body (5) is a horizontally cylindrical structure. The clamping block (6) is an arc-shaped block with an isosceles trapezoid cross-section. At least one pressure sensor (11) is fixedly nested on the outer wall of the clamping block (6), and an anti-slip pad is fixedly connected to the outer wall of the clamping block (6).

7. The pipe installation device for a fire protection project according to claim 1, characterized in that, During use, it includes the following steps: Step 1, put the in-pipe aligner; completely put the in-pipe aligner into the installed pipeline; Step 2, hoist the pipeline to be installed; place the pipeline to be installed on the hanger on the opposite side of the installed pipeline, and make the port of the pipeline to be installed opposite to the port of the installed pipeline; Step 3, alignment operation; includes the following sub-steps: S1, start the radial driving mechanism of the first clamping cylinder (1) through the wireless control terminal (4) so that the first clamping cylinder (1) is extrusion-fixed to the installed pipeline; S2, start the electric telescopic cylinder (3), and the electric telescopic cylinder (3) pushes the second clamping cylinder (2) into the pipeline to be installed; S3, start the radial driving mechanism of the second clamping cylinder (2), and make the radial moving distance of the clamping block (6) of the second clamping cylinder (2) the same as the radial moving distance of the clamping block (6) of the first clamping cylinder (1) to complete the alignment of the concentricity of the pipeline to be installed; Step 4, install the groove sealing ring and the hoop; Step 5, the in-pipe aligner goes to the next installation port of the pipeline; hold the wireless control terminal (4) and alternately start the radial driving mechanisms of the first clamping cylinder (1) and the second clamping cylinder (2) and the electric telescopic cylinder (3) so that the in-pipe aligner moves in the installed pipeline until the in-pipe aligner moves to the next installation port.

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