Half-pipe heat tracing construction installation equipment and construction technology

Abstract

The invention belongs to the technical field of industrial pipeline installation, and particularly relates to half-pipe heat tracing construction installation equipment and a construction technology.The half-pipe heat tracing construction installation equipment comprises an installation base, a vertical frame is fixedly connected to the upper end face of the installation base, and two lifting sliding rods are fixedly connected to the inner top face of the vertical frame; the outer walls of the two lifting sliding rods are both slidably connected with lifting sliding blocks, and the outer walls of the two lifting sliding blocks are both fixedly connected with vertical swing welding assemblies. The welding gun can be driven to conduct vertical swing welding on the joint of the half pipe and the pipeline, the welding installation quality and effect of the half pipe can be improved, meanwhile, synchronous swing welding operation can be conducted on the two sides of the half pipe, and therefore the welding quality of the joint of the two sides of the half pipe and the pipeline and the follow-up heat conduction use stability of the half pipe are guaranteed; the stability of the half pipe in the welding installation process can be kept, the welding installation effect of the half pipe is guaranteed, welding installation and pressure testing of the half pipe can be automatically and continuously carried out, and the overall installation operation efficiency of the half pipe is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial pipeline installation, and in particular relates to a half-pipe heating construction and installation device and a construction process. Background Art

[0002] With the continuous development of industrial production, heating pipes are increasingly used in various fields. In harsh environments, such as low temperature, high pressure, corrosive media, etc., pipes are easily damaged, affecting the normal production process. Traditional heating processes use methods such as electric heating, but these methods not only have slow heating efficiency, but are also only suitable for small pipe diameters. In order to solve the above problems, pipeline heating construction technology came into being. Through in-depth design and improved energy utilization efficiency, the half-pipe heating method can be used to heat the pipe to reduce pollution to the environment. The half-pipe heating method can fully meet the normal operation of the system, which can achieve rapid heating and meet the use of large-diameter pipes.

[0003] However, there are often the following problems when using half-pipe heating construction and installation equipment:

[0004] 1. The half-pipe heat tracing method requires the half-pipe to be welded and installed to the outer wall of the pipeline. However, it is difficult to perform synchronous welding operations on both sides of the half-pipe during the half-pipe installation process, which makes the operation efficiency of welding the half-pipe to the pipeline low, and the connection between the two sides of the half-pipe and the outer wall of the pipeline cannot be guaranteed to have the same welding quality and effect. If the welding quality on both sides of the half-pipe is different, it will affect the subsequent thermal stability of the half-pipe;

[0005] 2. During the half-pipe welding and installation process, since the outer wall of the pipe is relatively smooth and has an arc, the half-pipe is prone to position deviation during the process of welding and installation to the outer wall of the pipe, affecting the welding and installation effect of the half-pipe;

[0006] 3. After the half-pipe is welded and installed, it is necessary to perform a pressure test on the installed half-pipe to ensure the tightness of the heat connection inside the half-pipe. However, the welding and pressure test of the half-pipe cannot be performed automatically and continuously, which makes the overall installation efficiency of the half-pipe low. Summary of the invention

[0007] The purpose of the present invention is to address the problems of low efficiency in installing the above-mentioned half-pipe to the pipeline, inability to ensure the welding quality between the two sides of the half-pipe and the pipeline, insufficient stability in the fixation of the welding installation between the half-pipe and the pipeline, and inability to continuously perform pressure testing after the half-pipe is installed, resulting in low overall installation efficiency. The present invention provides a half-pipe heating construction and installation equipment and a construction process that can ensure the welding quality between the two sides of the half-pipe and the pipeline, improve the welding and installation efficiency between the half-pipe and the pipeline, maintain the stability of the welding installation of the half-pipe, and improve the overall installation efficiency of the half-pipe.

[0008] To achieve the above object, the present invention adopts the following technical solutions: a half-pipe heat tracing construction and installation equipment, comprising a mounting base, the upper end surface of the mounting base is fixedly connected to a vertical frame, the top surface of the vertical frame is fixedly connected to two lifting slide bars, the outer walls of the two lifting slide bars are slidably connected to lifting sliders, and the outer walls of the two lifting sliders are fixedly connected to vertical swing welding assemblies;

[0009] The vertical swing welding assembly includes a rotating frame fixedly connected to the outer wall of the lifting slider, the rotating frame is rotatably connected to a transfer shaft, the outer wall of the transfer shaft is fixedly connected to a gear, the inner wall of the vertical frame is fixedly connected to a toothed plate, the gear and the toothed plate are meshed with each other, the end of the transfer shaft is fixedly connected to a reciprocating screw, the reciprocating screw is threadedly connected to a reciprocating slider, and the outer wall of the reciprocating slider is rotatably connected to a reciprocating swing welding component;

[0010] The upper end surface of the mounting base is rotatably connected with a synchronous lifting drive assembly, the upper end surface of the mounting base and the top surface of the vertical frame are fixedly connected with a half-pipe fixing assembly, and the upper end surface of the vertical frame is fixedly connected with a quick pre-pressure test assembly.

[0011] Preferably, the reciprocating welding component includes a telescopic rod rotatably connected to the outer wall of the reciprocating slider, the side wall of the vertical frame is provided with a strip hole, a hollow slider is slidably connected to the strip hole, a pin is fixedly connected to the center of the hollow slider, the output end of the telescopic rod is rotatably connected to the pin, and the output end of the telescopic rod is fixedly connected to a welding gun.

[0012] Preferably, the synchronous lifting drive assembly includes a longitudinal screw rotatably connected to the upper end surface of the mounting base, a servo motor is fixedly connected to the lower end surface of the mounting base, the output end of the servo motor is fixedly connected to the lower end of the longitudinal screw, a driving slider is threadedly connected to the longitudinal screw, and the driving slider is fixedly connected to the outer walls of the two lifting sliders through a connecting rod.

[0013] Preferably, the half-pipe fixing assembly includes a plurality of No. 1 hinge seats fixedly connected to the upper end surface of the mounting base and the top surface of the vertical frame, the plurality of No. 1 hinge seats are arranged in a symmetrical structure, and the plurality of No. 1 hinge seats are hinged with electric push rods, the output ends of the plurality of electric push rods are rotatably connected to abutment fixing plates through No. 2 hinge seats, and the outer wall of the abutment fixing plates is fixedly connected with a sealing gasket.

[0014] Preferably, the rapid pre-pressure test assembly includes an automatic shutdown air pump fixedly connected to the upper end surface of the vertical frame, the automatic shutdown air pump is connected to an air sealing hose, one of the abutment fixing plates and the sealing gasket has a through hole in the middle, the end of the air sealing hose away from the automatic shutdown air pump is interference fixedly connected to the inner side of the through hole, a push-type switch is installed on the inner wall of the vertical frame, a control panel is fixedly connected to the side wall of the vertical frame, a controller is integrated in the control panel, and the control panel, the push-type switch, the automatic shutdown air pump and an external power supply are electrically connected.

[0015] Preferably, a plurality of limit guide rails are fixedly connected to the inner wall of the vertical frame, and the ends of the transfer shaft and the reciprocating screw are fixedly connected to limit bearings, and the limit bearings match the inner sides of the limit guide rails.

[0016] Preferably, a driving bottom wheel is fixedly connected to the lower end surface of the mounting base.

[0017] A construction process for half-pipe heating installation equipment, the specific process is as follows:

[0018] S1. Construction preparation: review the design drawings, understand the layout, specifications, and material requirements of pipeline heating, survey the construction site, and understand the direction, support points, and spatial environment of the pipeline;

[0019] S2. Technical training, including examination of on-site welder qualification certificates and assessment after on-site key and difficult welding training;

[0020] S3. Material acceptance: prepare the required electric heating elements, insulation materials, and fastener materials according to the design drawings and on-site conditions;

[0021] S4, half-pipe processing, the pipeline is checked according to the design requirements, the inside is cleaned, welding and blowing and pressing are carried out on the ground, mechanical cutting is adopted, and the groove is processed by angle grinder. Carbon steel pipes larger than 50mm can be cut and grooved by oxyacetylene flame, and the oxide scale, slag and surface layer that affect the quality of the joint on the groove surface are removed, and the uneven parts are polished flat;

[0022] S5. Half-pipe installation. When the main material is a high-temperature liquid material such as a oligomer, the half-pipe steam pipe is combined into a main pipe, which is wrapped around the pipeline and connected to the jacket valve after one or two turns of the flange. When the main material is a low-temperature material such as a gas, the half-pipe heat transfer oil is combined into a main pipe, and the main pipe straight pipe is directly sent to the jacket valve. The connection method of the half-pipe pipeline drain and sampling port is roughly the same as that of the jacket pipe. When the inner pipe material is a high-temperature liquid material such as a oligomer, a half-pipe is required at the elbow and reducer. When the inner pipe material is a gas phase material, a DN15 seamless steel pipe is used at the elbow to connect the half-pipe of the straight pipe section. A main pipe is combined at the half-pipe closing point. The main steam pipe is wrapped around the inner pipe once, and it is best to wrap it from the inside of the bolt. The gas phase pipe is directly combined into one pipe and the straight pipe is discharged;

[0023] S6. Half-pipe pressure test: Different numbers of pressure gauges shall be set according to the size of the pressure test pipeline system, but not less than two, one at each high and low point. The full scale value of the pressure gauge shall be 1.5-2 times of the test pressure, and the accuracy shall not be less than 1.5 level. The test pressure shall be based on the pressure at the highest point, and the pressure at the lowest point shall not exceed the bearing pressure of the pipeline components. The system shall be pressurized slowly. For pipelines with higher test pressure, the pressure shall be stopped for 10 minutes after reaching the test pressure, and then reduced to the design pressure and stopped for 30 minutes. It shall be qualified if there is no pressure drop, leakage or deformation;

[0024] S7. Inspection and acceptance. Check whether the half-pipe installation has any impact on the operation and maintenance of valves, equipment, electrical and instrumentation. Check whether the laying of the semi-heat pipes is arranged neatly and should not cross over or cross diagonally. Check whether the condensate pipes connected to the drain station are equipped with drain valves. Check whether the installation of the drain valves is coordinated, neat and easy to repair, disassemble and replace. Check whether the half-pipe should be insulated together with the pipeline equipment being heated. Check whether the direction of the half-pipe and the medium are identified.

[0025] Compared with the existing technology, the advantages of this half-pipe heating installation equipment and construction process are:

[0026] 1. A vertical swing welding assembly is provided in the present invention. While driving the lifting slider to move downward to drive the welding gun to move vertically downward, the welding gun can be synchronously driven to perform a small swing motion, so that the welding gun can be used to perform vertical swing welding on the connection between the half pipe and the pipeline, which is beneficial to improving the welding installation quality and effect of the half pipe.

[0027] 2. The present invention provides a synchronous lifting drive assembly, which drives the longitudinal screw to rotate so that the driving slider can move downward in the vertical frame, and then the connecting rod can be used to drive the two lifting sliders to move downward synchronously, so that the two welding guns can perform synchronous swing welding operations on both sides of the half pipe, thereby ensuring the welding quality of the connection between the two sides of the half pipe and the pipeline, ensuring the subsequent thermal conductivity and stability of the half pipe, and effectively improving the welding and installation efficiency of the half pipe and the pipeline.

[0028] 3. The present invention provides a half-pipe fixing assembly, which controls the electric push rod to push the abutment fixing plate so that the abutment fixing plate can abut and clamp the upper and lower ends of the half-pipe to maintain the stability of the half-pipe during the welding and installation process, thereby ensuring the welding and installation effect of the half-pipe.

[0029] 4. The present invention provides a quick pre-pressure test component. After the half-pipe is welded and installed, the automatic shutdown air pump is started by squeezing the push-type switch using the driving slider, so that the automatic shutdown air pump can inflate the interior of the half-pipe through the air-sealing hose to quickly implement the air-tightness pre-test after the half-pipe is installed. That is, the welding installation and pressure test of the half-pipe can be carried out automatically and continuously, further improving the overall installation efficiency of the half-pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The invention discloses a construction process flow chart of a half-pipe heating construction and installation device.

[0031] Figure 2 It is a three-dimensional structural schematic diagram from one viewing angle of a half-pipe heating construction and installation device provided by the present invention.

[0032] Figure 3 It is a three-dimensional structural schematic diagram from another perspective of a half-pipe heating construction and installation equipment provided by the present invention.

[0033] Figure 4 It is a cross-sectional view from the rear side of a neutral frame of a half-pipe heating construction and installation device provided by the present invention.

[0034] Figure 5 It is a schematic diagram of the partial structure of a vertical swing welding assembly in a half-pipe heating construction and installation device provided by the present invention.

[0035] Figure 6 It is a cross-sectional view from the front side of a neutral frame of a half-pipe heating construction and installation device provided by the present invention.

[0036] Figure 7 It is a schematic diagram of the structure of the installation base part in the half-pipe heating construction and installation equipment provided by the present invention.

[0037] In the figure: 1 mounting base, 2 vertical frame, 3 lifting slide bar, 4 lifting slider, 5 rotating frame, 6 transfer shaft, 7 gear, 8 tooth plate, 9 reciprocating screw, 10 reciprocating slider, 11 telescopic rod, 12 bar hole, 13 hollow slider, 14 pin shaft, 15 welding gun, 16 longitudinal screw, 17 servo motor, 18 driving slider, 19 No. 1 hinge seat, 20 electric push rod, 21 No. 2 hinge seat, 22 abutting fixing plate, 23 sealing gasket, 24 automatic shutdown air pump, 25 air sealing hose, 26 push switch, 27 control panel, 28 limit guide rail, 29 limit bearing, 30 driving bottom wheel. DETAILED DESCRIPTION

[0038] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0039] like Figure 2-Figure 7 As shown, a half-pipe heat tracing construction and installation equipment comprises a mounting base 1, a driving bottom wheel 30 is fixedly connected to the lower end surface of the mounting base 1, a vertical frame 2 is fixedly connected to the upper end surface of the mounting base 1, two lifting slide bars 3 are fixedly connected to the inner top surface of the vertical frame 2, the outer walls of the two lifting slide bars 3 are slidably connected to lifting sliders 4, the outer walls of the two lifting sliders 4 are fixedly connected to vertical swing welding assemblies, the vertical swing welding assemblies comprise a rotating frame 5 fixedly connected to the outer walls of the lifting sliders 4, a transfer shaft 6 is rotatably connected to the rotating frame 5, a gear 7 is fixedly connected to the outer wall of the transfer shaft 6, a tooth plate 8 is fixedly connected to the inner wall of the vertical frame 2, the gear 7 and the tooth plate 8 are meshed with each other, a reciprocating screw 9 is fixedly connected to the end of the transfer shaft 6, a plurality of limit guide rails 28 are fixedly connected to the inner wall of the vertical frame 2, and the transfer shaft 6 ends and the ends of the reciprocating screw 9 are fixedly connected to the limit bearing 29, and the limit bearing 29 matches the inner side of the limit guide rail 28. During the movement of the transfer shaft 6 and the reciprocating screw 9, the movement of the limit bearing 29 in the limit guide rail 28 can fully limit the transfer shaft 6 and the reciprocating screw 9. A reciprocating slider 10 is threadedly connected to the reciprocating slider 10. The outer wall of the reciprocating slider 10 is rotatably connected to a reciprocating oscillating welding component. The reciprocating oscillating welding component includes a telescopic rod 11 rotatably connected to the outer wall of the reciprocating slider 10. A strip hole 12 is opened on the side wall of the vertical frame 2. A hollow slider 13 is slidably connected to the strip hole 12. A pin shaft 14 is fixedly connected to the center of the hollow slider 13. The output end of the telescopic rod 11 is rotatably connected to the pin shaft 14, and the output end of the telescopic rod 11 is fixedly connected to a welding gun 15;

[0040] Place the half pipe to be installed in the middle of the two abutment fixing plates 22, control a number of electric push rods 20 to start, and use the electric push rods 20 to push the two abutment fixing plates 22 to move, so that the two abutment fixing plates 22 can abut and clamp the upper and lower ends of the half pipe to maintain the stability of the half pipe during the welding installation process, thereby ensuring the welding installation effect of the half pipe.

[0041] like Figure 4 and Figure 5 As shown, the upper end surface of the mounting base 1 is rotatably connected with a synchronous lifting drive assembly, which includes a longitudinal screw 16 rotatably connected to the upper end surface of the mounting base 1, and a servo motor 17 is fixedly connected to the lower end surface of the mounting base 1. The output end of the servo motor 17 is fixedly connected to the lower end of the longitudinal screw 16, and a driving slider 18 is threadedly connected to the longitudinal screw 16. The driving slider 18 is fixedly connected to the outer walls of the two lifting sliders 4 through a connecting rod;

[0042] When the half-pipe is welded and installed, the lifting slide block 4 is driven to move downward relative to the lifting slide bar 3 to drive the welding gun 15 to move vertically downward. At the same time, the meshing transmission of the gear 7 and the toothed plate 8 can be used to drive the adapter shaft 6 and the reciprocating screw 9 to rotate, so that the reciprocating slide block 10 starts to reciprocate relative to the reciprocating screw 9, and then the pin shaft 14 in the hollow slide block 13 is used to limit the rotation of the output end of the telescopic rod 11, so that the welding gun 15 at the output end of the telescopic rod 11 starts to swing slightly, so that the welding gun 15 can be used to perform vertical swing welding on the connection between the half-pipe and the pipeline, which is beneficial to improving the welding installation quality and effect of the half-pipe.

[0043] like Figure 2-Figure 4 and Figure 7 As shown, the upper end surface of the mounting base 1 and the inner top surface of the vertical frame 2 are fixedly connected with a half-tube fixing assembly, and the half-tube fixing assembly includes a plurality of No. 1 hinge seats 19 fixedly connected to the upper end surface of the mounting base 1 and the inner top surface of the vertical frame 2, and the plurality of No. 1 hinge seats 19 are arranged in a symmetrical structure, and the plurality of No. 1 hinge seats 19 are hinged with electric push rods 20, and the output ends of the plurality of electric push rods 20 are rotatably connected with abutment fixing plates 22 through No. 2 hinge seats 21, and the outer wall of the abutment fixing plates 22 is fixedly connected with sealing gaskets 23;

[0044] When the lifting slider 4 is driven to move downward, the servo motor 17 can be controlled to start, and the strong torque output of the servo motor 17 can be used to drive the longitudinal screw 16 to rotate, so that the driving slider 18 on the longitudinal screw 16 starts to move downward, and then the driving slider 18 starts to drive the two lifting sliders 4 to move downward synchronously through the connecting rod, so that the two welding guns 15 can perform synchronous swing welding operations on both sides of the half pipe, thereby ensuring the welding quality of the connection between the two sides of the half pipe and the pipeline, ensuring the subsequent thermal conductivity and stability of the half pipe, and at the same time effectively improving the welding and installation efficiency of the half pipe and the pipeline.

[0045] like Figure 2 , Figure 3 and Figure 6 As shown, a quick pre-pressure test component is fixedly connected to the upper end surface of the vertical frame 2, and the quick pre-pressure test component includes an automatic shutdown air pump 24 fixedly connected to the upper end surface of the vertical frame 2, and an air sealing hose 25 is connected to the automatic shutdown air pump 24, one of which abuts against the fixed plate 22, and a perforation is opened in the middle of the sealing gasket 23, and the end of the air sealing hose 25 away from the automatic shutdown air pump 24 is fixedly connected to the inner side of the perforation by interference, and a push switch 26 is installed on the inner wall of the vertical frame 2, and a control panel 27 is fixedly connected to the side wall of the vertical frame 2, and a controller is integrated in the control panel 27, and the control panel 27, the push switch 26, the automatic shutdown air pump 24 and the external power supply are electrically connected to form;

[0046] When the driving slider 18 moves to the lower position inside the vertical frame 2, the driving slider 18 can squeeze the push switch 26, so that the controller in the control panel 27 starts to transmit a start signal to the automatic shutdown air pump 24, and then the automatic shutdown air pump 24 starts to inflate the interior of the half-pipe through the air sealing hose 25. Since a sealing gasket 23 is fixed to the outer wall of the abutting fixing plate 22 used to fix the half-pipe, the air tightness between the half-pipe and the pipeline can be detected by inflating air into the half-pipe, thereby quickly realizing the air tightness pre-detection after the half-pipe is installed, that is, the welding installation and pressure test of the half-pipe can be automatically and continuously carried out, further improving the overall installation efficiency of the half-pipe.

[0047] like Figure 1 As shown in the figure, a construction process for half-pipe heating construction and installation equipment is shown in the figure. The specific process is as follows:

[0048] S1. Construction preparation: review the design drawings, understand the layout, specifications, and material requirements of pipeline heating, survey the construction site, and understand the direction, support points, and spatial environment of the pipeline;

[0049] S2. Technical training, including examination of on-site welder qualification certificates and assessment after on-site key and difficult welding training;

[0050] S3. Material acceptance: prepare the required electric heating elements, insulation materials, and fastener materials according to the design drawings and on-site conditions;

[0051] S4, half-pipe processing, the pipeline is checked according to the design requirements, the inside is cleaned, welding and blowing and pressing are carried out on the ground, mechanical cutting is adopted, and the groove is processed by angle grinder. Carbon steel pipes larger than 50mm can be cut and grooved by oxyacetylene flame, and the oxide scale, slag and surface layer that affect the quality of the joint on the groove surface are removed, and the uneven parts are polished flat;

[0052] S5. Half-pipe installation. When the main material is a high-temperature liquid material such as a oligomer, the half-pipe steam pipe is combined into a main pipe, which is wrapped around the pipeline and connected to the jacket valve after one or two turns of the flange. When the main material is a low-temperature material such as a gas, the half-pipe heat transfer oil is combined into a main pipe, and the main pipe straight pipe is directly sent to the jacket valve. The connection method of the half-pipe pipeline drain and sampling port is roughly the same as that of the jacket pipe. When the inner pipe material is a high-temperature liquid material such as a oligomer, a half-pipe is required at the elbow and reducer. When the inner pipe material is a gas phase material, a DN15 seamless steel pipe is used at the elbow to connect the half-pipe of the straight pipe section. A main pipe is combined at the half-pipe closing point. The main steam pipe is wrapped around the inner pipe once, and it is best to wrap it from the inside of the bolt. The gas phase pipe is directly combined into one pipe and the straight pipe is discharged;

[0053] S6. Half-pipe pressure test: Different numbers of pressure gauges shall be set according to the size of the pressure test pipeline system, but not less than two, one at each high and low point. The full scale value of the pressure gauge shall be 1.5-2 times of the test pressure, and the accuracy shall not be less than 1.5 level. The test pressure shall be based on the pressure at the highest point, and the pressure at the lowest point shall not exceed the bearing pressure of the pipeline components. The system shall be pressurized slowly. For pipelines with higher test pressure, the pressure shall be stopped for 10 minutes after reaching the test pressure, and then reduced to the design pressure and stopped for 30 minutes. It shall be qualified if there is no pressure drop, leakage or deformation;

[0054] S7. Inspection and acceptance. Check whether the half-pipe installation has any impact on the operation and maintenance of valves, equipment, electrical and instrumentation. Check whether the laying of the semi-heat pipes is arranged neatly and should not cross over or cross diagonally. Check whether the condensate pipes connected to the drain station are equipped with drain valves. Check whether the installation of the drain valves is coordinated, neat and easy to repair, disassemble and replace. Check whether the half-pipe should be insulated together with the pipeline equipment being heated. Check whether the direction of the half-pipe and the medium are identified.

[0055] The working principle of the present invention is as follows:

[0056] 1. When in use, place the half pipe after mechanical cutting in the middle of the two abutting fixing plates 22, control a plurality of electric push rods 20 to start, and use a plurality of electric push rods 20 to push the two abutting fixing plates 22 to move, so that the two abutting fixing plates 22 can abut and clamp the upper and lower ends of the half pipe, so as to maintain the stability of the half pipe during the welding installation process and ensure the welding installation effect of the half pipe;

[0057] 2. During the process of welding and installing the half-pipe to the outer wall of the pipeline, the lifting slider 4 can be driven to move downward relative to the lifting slider 3 to drive the welding gun 15 to move vertically downward. At the same time, the meshing transmission of the gear 7 and the toothed plate 8 can be used to drive the adapter shaft 6 and the reciprocating screw 9 to rotate, so that the reciprocating slider 10 starts to reciprocate relative to the reciprocating screw 9, and then the pin shaft 14 in the hollow slider 13 is used to limit the rotation of the output end of the telescopic rod 11, so that the welding gun 15 at the output end of the telescopic rod 11 starts to swing slightly, so that the welding gun 15 can be used to perform vertical swing welding on the connection between the half-pipe and the pipeline, which is conducive to improving the welding installation quality and effect of the half-pipe;

[0058] 3. During the process of driving the lifting slide block 4 to move downward, the servo motor 17 can be controlled to start, and the strong torque output of the servo motor 17 can be used to drive the longitudinal screw 16 to rotate, so that the driving slide block 18 on the longitudinal screw 16 starts to move downward, and then the driving slide block 18 starts to drive the two lifting slide blocks 4 to move downward synchronously through the connecting rod, so that the two welding guns 15 can perform synchronous swing welding operations on both sides of the half pipe, thereby ensuring the welding quality of the connection between the two sides of the half pipe and the pipeline, ensuring the subsequent thermal conductivity and stability of the half pipe, and effectively improving the welding and installation efficiency of the half pipe and the pipeline;

[0059] 4. After the half-pipe is welded and installed to the pipeline, that is, when the driving slider 18 moves to the lower position inside the vertical frame 2, the driving slider 18 can squeeze the push switch 26, so that the controller in the control panel 27 starts to transmit a start signal to the automatic shutdown air pump 24, and then the automatic shutdown air pump 24 starts to inflate the inside of the half-pipe through the air sealing hose 25. Since the outer wall of the abutting fixing plate 22 used to fix the half-pipe is fixed with a sealing gasket 23, the air tightness between the half-pipe and the pipeline can be detected by inflating the inside of the half-pipe, so that the air tightness pre-detection after the installation of the half-pipe can be quickly realized, that is, the welding installation and pressure test of the half-pipe can be automatically and continuously carried out, further improving the overall installation efficiency of the half-pipe.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A half-pipe heat tracing construction and installation device, comprising a mounting base (1), characterized in that: The upper end surface of the mounting base (1) is fixedly connected to a vertical frame (2), the inner top surface of the vertical frame (2) is fixedly connected to two lifting slide bars (3), the outer walls of the two lifting slide bars (3) are slidably connected to lifting sliders (4), and the outer walls of the two lifting sliders (4) are fixedly connected to vertical swing welding assemblies; The vertical swing welding assembly comprises a rotating frame (5) fixedly connected to the outer wall of the lifting slider (4); a transfer shaft (6) is rotatably connected to the rotating frame (5); a gear (7) is fixedly connected to the outer wall of the transfer shaft (6); a toothed plate (8) is fixedly connected to the inner wall of the vertical frame (2); the gear (7) and the toothed plate (8) are meshed with each other; a reciprocating screw (9) is fixedly connected to the end of the transfer shaft (6); a reciprocating slider (10) is threadedly connected to the reciprocating screw (9); and a reciprocating swing welding component is rotatably connected to the outer wall of the reciprocating slider (10); The upper end surface of the mounting base (1) is rotatably connected to a synchronous lifting drive assembly, the upper end surface of the mounting base (1) and the inner top surface of the vertical frame (2) are both fixedly connected to a half-pipe fixing assembly, and the upper end surface of the vertical frame (2) is fixedly connected to a quick pre-pressure test assembly.

2. A half-pipe heating construction and installation equipment according to claim 1, characterized in that: The reciprocating welding component comprises a telescopic rod (11) rotatably connected to the outer wall of a reciprocating slider (10); a strip hole (12) is provided on the side wall of the vertical frame (2); a hollow slider (13) is slidably connected to the strip hole (12); a pin shaft (14) is fixedly connected to the center of the hollow slider (13); an output end of the telescopic rod (11) is rotatably connected to the pin shaft (14); and a welding gun (15) is fixedly connected to the output end of the telescopic rod (11).

3. A half-pipe heating construction and installation equipment according to claim 2, characterized in that: The synchronous lifting drive assembly comprises a longitudinal screw (16) rotatably connected to the upper end surface of the mounting base (1); a servo motor (17) is fixedly connected to the lower end surface of the mounting base (1); an output end of the servo motor (17) is fixedly connected to the lower end of the longitudinal screw (16); a driving slider (18) is threadedly connected to the longitudinal screw (16); and the driving slider (18) is fixedly connected to the outer walls of the two lifting sliders (4) via a connecting rod.

4. A half-pipe heating construction and installation equipment according to claim 3, characterized in that: The half-pipe fixing assembly comprises a plurality of No. 1 hinge seats (19) fixedly connected to the upper end surface of the mounting base (1) and the inner top surface of the vertical frame (2), the plurality of No. 1 hinge seats (19) being arranged in a symmetrical structure, and the plurality of No. 1 hinge seats (19) are hingedly connected with electric push rods (20), the output ends of the plurality of electric push rods (20) are rotatably connected with abutment fixing plates (22) through No. 2 hinge seats (21), and the outer wall of the abutment fixing plates (22) is fixedly connected with a sealing gasket (23).

5. A half-pipe heating construction and installation equipment according to claim 4, characterized in that: The rapid pre-pressure test assembly comprises an automatic shutdown air pump (24) fixedly connected to the upper end surface of the vertical frame (2), the automatic shutdown air pump (24) is connected to an air sealing hose (25), one of the abutting fixed plates (22) and the sealing gasket (23) is provided with a through hole in the middle, the end of the air sealing hose (25) away from the automatic shutdown air pump (24) is interference-fixedly connected to the inner side of the through hole, a push-type switch (26) is installed on the inner wall of the vertical frame (2), a control panel (27) is fixedly connected to the side wall of the vertical frame (2), a controller is integrated in the control panel (27), and the control panel (27), the push-type switch (26), the automatic shutdown air pump (24) and an external power supply are electrically connected to form a structure.

6. A half-pipe heating construction and installation equipment according to claim 5, characterized in that: The inner wall of the vertical frame (2) is fixedly connected to a plurality of limit guide rails (28); the ends of the transfer shaft (6) and the ends of the reciprocating screw (9) are fixedly connected to limit bearings (29); and the limit bearings (29) match the inner sides of the limit guide rails (28).

7. A half-pipe heating construction and installation equipment according to claim 6, characterized in that: The lower end surface of the mounting base (1) is fixedly connected with a driving bottom wheel (30).

8. A construction process for the half-pipe heating construction and installation equipment according to any one of claims 1 to 7, characterized in that: The specific process is as follows: S1. Construction preparation: review the design drawings, understand the layout, specifications, and material requirements of pipeline heating, survey the construction site, and understand the direction, support points, and spatial environment of the pipeline; S2. Technical training, including examination of on-site welder qualification certificates and assessment after on-site key and difficult welding training; S3. Material acceptance: prepare the required electric heating elements, insulation materials, and fastener materials according to the design drawings and on-site conditions; S4, half-pipe processing, the pipeline is checked according to the design requirements, the inside is cleaned, welding and blowing and pressing are carried out on the ground, mechanical cutting is adopted, and the groove is processed by angle grinder. Carbon steel pipes larger than 50mm can be cut and grooved by oxyacetylene flame, and the oxide scale, slag and surface layer that affect the quality of the joint on the groove surface are removed, and the uneven parts are polished flat; S5. Half-pipe installation. When the main material is a high-temperature liquid material such as a oligomer, the half-pipe steam pipe is combined into a main pipe, which is wrapped around the pipeline and connected to the jacket valve after one or two turns of the flange. When the main material is a low-temperature material such as a gas, the half-pipe heat transfer oil is combined into a main pipe, and the main pipe straight pipe is directly sent to the jacket valve. The connection method of the half-pipe pipeline drain and sampling port is roughly the same as that of the jacket pipe. When the inner pipe material is a high-temperature liquid material such as a oligomer, a half-pipe is required at the elbow and reducer. When the inner pipe material is a gas phase material, a DN15 seamless steel pipe is used at the elbow to connect the half-pipe of the straight pipe section. A main pipe is combined at the half-pipe closing point. The main steam pipe is wrapped around the inner pipe once, and it is best to wrap it from the inside of the bolt. The gas phase pipe is directly combined into one pipe and the straight pipe is discharged; S6. Half-pipe pressure test: Different numbers of pressure gauges shall be set according to the size of the pressure test pipeline system, but not less than two, one at each high and low point. The full scale value of the pressure gauge shall be 1.5-2 times of the test pressure, and the accuracy shall not be less than 1.5 level. The test pressure shall be based on the pressure at the highest point, and the pressure at the lowest point shall not exceed the bearing pressure of the pipeline components. The system shall be pressurized slowly. For pipelines with higher test pressure, the pressure shall be stopped for 10 minutes after reaching the test pressure, and then reduced to the design pressure and stopped for 30 minutes. It shall be qualified if there is no pressure drop, leakage or deformation; S7. Inspection and acceptance. Check whether the half-pipe installation has any impact on the operation and maintenance of valves, equipment, electrical and instrumentation. Check whether the laying of the semi-heat pipes is arranged neatly and should not cross over or cross diagonally. Check whether the condensate pipes connected to the drain station are equipped with drain valves. Check whether the installation of the drain valves is coordinated, neat and easy to repair, disassemble and replace. Check whether the half-pipe should be insulated together with the pipeline equipment being heated. Check whether the direction of the half-pipe and the medium are identified.

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