Protective pipeline welding device

Abstract

The utility model relates to a protective pipeline welding device which comprises two roller driving and supporting assemblies which are arranged below a pipeline to be welded in a front-back mode, a movable frame assembly is arranged on the peripheries of the two roller driving and supporting assemblies, a protective shed assembly is arranged on the top of the movable frame assembly, and a movable welding assembly is installed in the protective shed assembly. A plurality of spraying dust removal assemblies are arranged at the four corners and the middle of the top of the protective shed assembly, and a plurality of locking assemblies are arranged between the roller driving supporting assembly and the movable frame assembly. The device can be widely applied to machining and welding construction of pipelines, pipe fittings and the like of capital construction projects such as thermal power plants and chemical plants, the machining and welding quality of the pipelines can be guaranteed, the operation service life of a pipeline system can be guaranteed, the construction cost can be reduced, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-diameter pipeline welding processing, in particular to a protective pipeline welding device. Background Art

[0002] In the current construction process of domestic thermal power plants, chemical plants and other infrastructure projects, there are often large diameter pipeline processing, production, welding and other work. However, as the diameter of the project pipeline becomes larger and larger, the original manual welding methods on the original construction site can no longer meet the on-site construction quality requirements. At the same time, due to various factors such as short construction period and large one-time investment cost, if the infrastructure projects are outsourced to factory processing, the construction cost is relatively high. The use of external commissioned production + transportation not only increases the construction cost, but also the transportation cost is relatively high. If on-site processing is used, the pipeline processing progress is slow and the construction quality is poor due to the long rainy season, more rain or hot summer. As a result, the investment and construction of pipeline production do not meet the construction concept of infrastructure saving, which has a great impact on the construction period, construction cost, and construction efficiency of the project. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provides a protective pipeline welding device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A protective pipeline welding device comprises two roller-driven support assemblies arranged under the pipeline to be welded and arranged front and back, a mobile frame assembly is arranged outside the two roller-driven support assemblies, a protective shed assembly is arranged on the top of the mobile frame assembly, a mobile welding assembly is installed in the protective shed assembly, a plurality of spray dust removal assemblies are arranged at the four corners and the middle of the top of the protective shed assembly, and a plurality of locking assemblies are arranged between the roller-driven support assemblies and the mobile frame assemblies.

[0006] The roller drive support assembly includes a base, with two front and rear roller plates at both ends of the base, two rollers rotatably installed between the two roller plates, the two rollers are supported on the outer wall of the pipe to be welded, a drive motor is fixed outside the roller plate, the drive motor drives the two rollers through a chain, and a sleeve fixing plate is provided between the outer side walls of the front and rear roller plates.

[0007] The mobile frame assembly includes a workbench, frame columns are arranged at the four corners of the bottom of the workbench, a moving wheel is installed at the bottom of each frame column, and a through groove is opened in the middle of the workbench corresponding to the pipe to be welded.

[0008] The protective shed assembly comprises a protective shed fixed on a workbench plate, a manhole is arranged on the left side wall of the protective shed, and an observation hole is arranged on the front side of the protective shed.

[0009] The mobile welding assembly includes an electric hoist bracket track installed on the top of the protective shed, on which an electric hoist is movably installed, and an automatic submerged arc welding machine is connected to the bottom of the electric hoist rope. The automatic submerged arc welding machine is arranged through a through slot just above the pipe to be welded.

[0010] The spray dust removal assembly comprises a spray pipe installed on the protective shed, the spray pipe is connected to an external water supply device, and an atomizing nozzle is arranged on the top of the spray pipe.

[0011] The locking assembly includes a threaded sleeve and a locking screw. The threaded sleeve is fixed outside the sleeve fixing plate, the locking screw is threadedly installed at the lower end of the frame column, and the locking screw is tightened in the corresponding threaded sleeve.

[0012] The beneficial effects of the utility model are as follows: the utility model can be widely used in the processing and welding construction of pipelines, pipe fittings and the like in various infrastructure projects such as thermal power plants and chemical plants, which can not only ensure the quality of pipeline processing and welding and ensure the service life of the pipeline system, but also reduce construction costs and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of one direction of the utility model;

[0014] Figure 2 It is a structural schematic diagram of another direction of the utility model;

[0015] In the figure: 1-roller drive support assembly; 2-mobile frame assembly; 3-protection shed assembly; 4-mobile welding assembly; 5-spray dust removal assembly; 6-locking assembly; 7-pipeline to be welded;

[0016] 101-base; 102-roller stand; 103-roller; 104-drive motor; 105-sleeve fixing plate;

[0017] 201-working table; 202-frame column; 203-moving wheel; 204-through slot; 205-reinforced crossbeam; 206-reinforced diagonal brace; 207-reinforced diagonal brace; 208-ladder;

[0018] 301-protection shed; 302-manhole; 303-observation hole;

[0019] 401-Electric hoist support rail; 402-Electric hoist; 403-Automatic submerged arc welding machine;

[0020] 501-spray pipe; 502-atomizing nozzle;

[0021] 601-threaded sleeve; 602-locking screw;

[0022] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] like Figure 1 to Figure 2 As shown, a protective pipe welding device includes two roller-driven support assemblies 1 arranged under the pipe 7 to be welded and arranged front and back, a mobile frame assembly 2 is arranged outside the two roller-driven support assemblies 1, a protective shed assembly 3 is arranged on the top of the mobile frame assembly 2, a mobile welding assembly 4 is installed in the protective shed assembly 3, a plurality of spray dust removal assemblies 5 are arranged at the four corners and the middle of the top of the protective shed assembly 3, and a plurality of locking assemblies 6 are arranged between the roller-driven support assembly 1 and the mobile frame assembly 2.

[0028] The roller drive support assembly 1 includes a base 101, and two front and rear roller uprights 102 are provided at the left and right ends of the base 101. Two rollers 103 are rotatably installed between the two roller uprights 102. The two rollers 103 are supported on the outer wall of the pipe 7 to be welded. A driving motor 104 is fixed outside the roller upright 102. The driving motor 104 drives the two rollers 103 through a chain. A sleeve fixing plate 105 is provided between the outer side walls of the front and rear roller uprights 102.

[0029] The roller drive support assembly 1 adopts a box beam structure, which has the advantages of strong bearing capacity, no deformation, smooth start, large starting torque, small impact on the reducer, low voltage, long service life, adjustable speed, etc. It is safe and flexible. The start and stop of the electric self-adjusting roller drive support assembly 1 are controlled by a remote control handle.

[0030] The movable frame assembly 2 includes a workbench 201, and frame columns 202 are provided at the four corners of the bottom of the workbench 201. A movable wheel 203 is installed at the bottom of each frame column 202. A through groove 204 is opened in the middle of the workbench 201 corresponding to the pipe 7 to be welded.

[0031] Reinforced cross beams 205 and reinforced diagonal braces 206 are provided between the two left frame columns 202 and between the two right frame columns 202; reinforced diagonal braces 207 are provided between the middle of the two front frame columns 202 and the bottom of the workbench 201 and between the middle of the two rear frame columns 202 and the bottom of the workbench 201.

[0032] A ladder 208 is welded on the left side of the workbench 201 , and the ladder 208 is welded to the reinforcement beam 205 and the reinforcement diagonal brace 206 .

[0033] The mobile frame assembly 2 is made of channel steel and color steel plate, and the skeletons are connected by welding to ensure the skeleton connection strength.

[0034] The protection shed assembly 3 includes a protection shed 301 fixed on the workbench 201 , a manhole 302 is provided on the left side wall of the protection shed 301 corresponding to the ladder 208 , and an observation hole 303 is provided on the front side of the protection shed 301 .

[0035] The top of the protection shed 301 is in a herringbone structure.

[0036] The protective shed component 3 is made of color steel plate, without back-water overlap, and overlapped by ≥50mm in the longitudinal direction and at least one wave node in the transverse direction. The corrugated plate and the support are fixed with self-tapping screws, and the corrugated plates are fixed with blind rivets, which are firmly and reliably fixed. The rivet fixing spacing is arranged according to ≤250mm in the longitudinal direction and 1 wave valley in the transverse direction.

[0037] The mobile welding assembly 4 includes an electric hoist support track 401 installed on the top of the protective shed 301, on which an electric hoist 402 is movably installed, and the bottom of the rope of the electric hoist 402 is connected to an automatic submerged arc welding machine 403, which passes through the through slot 204 and is arranged directly above the pipe 7 to be welded.

[0038] The use of automatic submerged arc welding machine 403 not only solves the problems of weld porosity and incomplete welding caused by strong winds, but also improves the intrinsic quality and appearance process of welding.

[0039] The spray dust removal assembly 5 includes a spray pipe 501 installed on the protection shed 301 , the spray pipe 501 is connected to an external water supply device, and an atomizing nozzle 502 is provided on the top of the spray pipe 501 .

[0040] The spray pipe 501 is made of 12mm PVC pipe, and the water source is taken from the daily water pipe. The atomizing nozzle 502 sprays water in a mist form, and the normal water pressure spray diameter is about 60cm, and the water volume is about 0-8 liters / hour.

[0041] The spray dust removal component 5 is not only used to reduce dust in the surrounding environment to ensure that the on-site construction meets the environmental protection requirements, but also can be used for cooling in summer construction to ensure that the construction environment temperature in the shed is suitable, which is convenient for summer night construction, effectively improving work efficiency and shortening construction period.

[0042] The locking assembly 6 includes a threaded sleeve 601 and a locking screw 602 . The threaded sleeve 601 is fixed outside the sleeve fixing plate 105 . The locking screw 602 is threadedly installed on the lower end of the frame column 202 . The locking screw 602 is tightened in the corresponding threaded sleeve 601 .

[0043] In the past, large-diameter pipeline processing and welding at the construction site of infrastructure projects not only failed to guarantee the quality of welding process, but was also greatly affected by factors such as weather and humidity. According to the site requirements of on-site infrastructure construction, welding quality process requirements, environmental protection control requirements, and the characteristics of short infrastructure cycle and cost saving, the utility model chooses to build a semi-enclosed protective pipeline welding device that meets the quality process requirements and has the functions of spray dust reduction, electric speed regulation, automatic welding, etc. at the infrastructure construction site.

[0044] 1) It can solve various problems that affect construction progress and quality caused by large-diameter pipeline welding processing in infrastructure.

[0045] 2) In terms of quality, automatic submerged arc welding is adopted, which greatly improves the quality pass rate of large-diameter pipeline welding, avoids welding rework, improves construction efficiency, reduces the procurement cost of consumables, and indirectly reduces the rework cost of project construction.

[0046] 3) The large-diameter pipeline welding construction can be free from the restrictions of weather factors. Regardless of windy, rainy, snowy and other weather conditions, the construction work can be carried out continuously for 24 hours, which greatly saves the construction period.

[0047] 4) Spray pipes are installed on the outside of the large-diameter pipe protection processing shed to solve the dust problem during welding. This is not only beneficial to the health requirements of construction workers, but also conducive to summer heat prevention and cooling construction.

[0048] 5) The electric self-adjusting roller frames are all operated by remote control handles, which reduces the input of construction auxiliary manpower and can realize automatic rolling of pipelines and flow operations that closely cooperate with automatic submerged arc welding.

[0049] 6) The structure is simple, the equipment selection is universal, the construction period is short, and the time for the layout of the device, the installation of the automatic submerged arc welding system and the heat protection and dust reduction system, and the installation and commissioning of the electric self-adjusting rolling device is about eight days, which well guarantees the construction progress.

[0050] The results of this utility model have been well applied in the processing and welding construction of circulating water pipelines, hot primary air ducts, cold primary air ducts, hot secondary air ducts, cold secondary air ducts, main steam pipelines, reheat steam pipelines and other pipelines in infrastructure projects of thermal power plants, effectively improving the process efficiency of welding construction and saving labor and machinery costs.

[0051] The utility model can be widely used in the processing and welding construction of pipelines, pipe fittings, etc. in various infrastructure projects such as thermal power plants and chemical plants. It can not only ensure the quality of pipeline processing and welding and ensure the service life of the pipeline system, but also reduce construction costs and improve work efficiency.

[0052] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A protective pipeline welding device, characterized in that: The invention comprises two roller-driven support assemblies (1) arranged below a pipe to be welded (7) and arranged front and back, a movable frame assembly (2) being arranged outside the two roller-driven support assemblies (1), a protective shed assembly (3) being arranged on the top of the movable frame assembly (2), a movable welding assembly (4) being installed inside the protective shed assembly (3), a plurality of spray dust removal assemblies (5) being arranged at the four corners and in the middle of the top of the protective shed assembly (3), and a plurality of locking assemblies (6) being arranged between the roller-driven support assemblies (1) and the movable frame assembly (2).

2. A protective pipeline welding device according to claim 1, characterized in that: The roller drive support assembly (1) comprises a base (101), two front and rear roller upright plates (102) are respectively arranged at the left and right ends of the base (101), two rollers (103) are rotatably mounted between the two roller upright plates (102), the two rollers (103) are supported on the outer wall of the pipe (7) to be welded, a driving motor (104) is fixed outside the roller upright plates (102), the driving motor (104) drives the two rollers (103) through a chain, and a sleeve fixing plate (105) is respectively arranged between the outer side walls of the front and rear roller upright plates (102).

3. A protective pipeline welding device according to claim 2, characterized in that: The movable frame assembly (2) comprises a workbench (201), frame columns (202) are arranged at the four corners of the bottom of the workbench (201), a movable wheel (203) is installed at the bottom of each frame column (202), and a through groove (204) is opened in the middle of the workbench (201) corresponding to the pipe (7) to be welded.

4. A protective pipeline welding device according to claim 3, characterized in that: A reinforcement crossbeam (205) and a reinforcement diagonal brace (206) are provided between the two frame columns (202) on the left side and between the two frame columns (202) on the right side; a reinforcement diagonal brace (207) is provided between the middle of the two frame columns (202) on the front side and the bottom of the workbench (201) and between the middle of the two frame columns (202) on the rear side and the bottom of the workbench (201).

5. A protective pipeline welding device according to claim 4, characterized in that: A ladder (208) is welded on the left side of the workbench plate (201), and the ladder (208) is welded on the reinforcement beam (205) and the reinforcement diagonal brace (206).

6. A protective pipeline welding device according to claim 5, characterized in that: The protection shed assembly (3) comprises a protection shed (301) fixed on a workbench (201), a manhole (302) is provided on the left side wall of the protection shed (301) corresponding to the ladder (208), and an observation hole (303) is provided on the front side of the protection shed (301).

7. A protective pipeline welding device according to claim 6, characterized in that: The top of the protection shed (301) is in a herringbone structure.

8. The protective pipeline welding device according to claim 7, characterized in that: The mobile welding assembly (4) comprises an electric hoist support track (401) installed at the top of the protective shed (301), an electric hoist (402) is movably installed on the electric hoist support track (401), an automatic submerged arc welding machine (403) is connected to the bottom of the rope of the electric hoist (402), and the automatic submerged arc welding machine (403) passes through the through slot (204) and is arranged directly above the pipeline (7) to be welded.

9. A protective pipeline welding device according to claim 8, characterized in that: The spray dust removal assembly (5) comprises a spray pipe (501) installed on the protection shed (301), the spray pipe (501) is connected to an external water supply device, and an atomizing nozzle (502) is arranged at the top of the spray pipe (501).

10. The protective pipeline welding device according to claim 9, characterized in that: The locking assembly (6) comprises a threaded sleeve (601) and a locking screw (602), wherein the threaded sleeve (601) is fixed outside the sleeve fixing plate (105), the locking screw (602) is threadedly mounted on the lower end of the frame column (202), and the locking screw (602) is screwed into the corresponding threaded sleeve (601).

Images