RU2219414C1 - Main pipeline welder's tent - Google Patents

Abstract

FIELD: construction and repair of main pipelines. SUBSTANCE: proposed tent contains skeleton, panels secured on skeleton and forming roof, end and side walls with opening to pass pipeline and people, crossmember, plenum-exhaust ventilation device and lighting fittings. Panels are made of fire-resistant heatproof material, openings of end walls are provided with gates which can be fixed in required position to pass pipeline. Tent is furnished with pairs of longitudinally spaced adjustable in height and secured on side and end panels by aprons in their lower part. Which provide movement of tent and its fixing on pipeline. To impart additional rigidity to skeleton, baskets to store tools and appliances are secured in its corners on side and end walls. With tent being lifted from pipeline or fitted on pipeline, crossmember interacts with gate locks making the gates force opened. Electrical equipment of tent can be connected to local demands generator of building machines. EFFECT: enlarged range of technical means. 6 cl, 3 dwg

Description

 The invention relates to construction and is used in the installation and welding works during the construction and repair of pipelines and various pipelines as a universal shelter for installation work, manual and semi-automatic welding, cleaning and insulation works in various climatic zones at low outdoor temperatures.

It is known that trunk pipelines are built in various climatic zones under different weather conditions, as well as at different times of the day. So, SNiP 2.05.06.-85 sets the temperature interval for welding operations in the range from +40 to -40 ^o C.

 The prior art various camera devices for carrying out work on pipelines laid in ponds and swamps. These cameras have a frame with waterproof casing. The camera allows in adverse conditions for production, for example, welding, to fence off the working area and create an acceptable microclimate in it (see SU 1161781 A, 06.15.85. F 16 L 55/18 or SU 1513291 A, 07.10.89. F 16 L 55/18). These devices are unsuitable for construction and repair work on surface or underground pipelines, especially large diameters.

 It is known that pipe ends prepared for welding with a diameter of 1220 and 1420 mm under any temperature conditions are subject to mandatory preheating within the heat-affected zone.

 It is known that welding is prohibited when the surface of the pipeline is wet. In this case, manual arc welding is recommended to speed up the work using the dissected method with the participation of two pairs of welders. When mounting pipe lashes in the field, it is imperative to use tents to shelter the welders and protect the electric arc from wind and moisture (see Zlatkin VP Organization of the construction of main pipelines. L .: Nedra, 1976, p. 92-93). The known decision is made as the closest analogue of the claimed invention.

 The invention is aimed at solving the existing problem - the creation of shelters - tents for installation and welding works, allowing non-stop production of work during rains, low temperatures, as well as during the dark hours of the day, with the provision of the necessary sanitary and hygienic standards for workers: lighting, ventilation, microclimate. This problem is solved in that the tent of the welder of the main pipelines contains a frame, panels fixed on it, forming a roof, end and side walls with openings for the passage of the pipeline and the passage of people, the beam, the supply and exhaust ventilation and lamps. The sheets are made of refractory heat-resistant material, and the openings of the end walls are equipped with opening gates with the possibility of fixing their position when the pipeline passes through them. To move the tent through the pipeline, it is equipped with pairs of longitudinally spaced adjustable support and guide rollers. In addition, the tent is equipped with lateral height-adjustable ski supports, as well as aprons fixed to the side and end panels (around the entire perimeter) in their lower part. To give the frame additional rigidity in its corners, baskets for storing the tool and equipment are fixed on the side and end walls. When raising a tent for installation on or removal from the pipeline, the yoke interacts with the gate locks, which are forced open. The electric equipment of the tent is made with the possibility of connecting construction machines to the generator’s own needs. In special cases, the panels forming the roof and walls of the tent are made of a transparent material, such as PVC. The walls forming the tent walls are protected from the inside or the outside and from the inside by a metal mesh.

 To compensate for the temperature deformations of the panels forming the walls of the tent tent, the latter are fixed to the frame by means of spacers made of elastic frost-resistant material, for example, tent-reinforced mesh of two- or three-layer technical fabric. The guide rollers provide lateral stability of the tent during work and during its movement and are located on the sides of the pipeline at the level of its horizontal diameter with the possibility of adjusting their position depending on the size of the diameter of the pipeline.

 The invention is illustrated in the graphic material, where in FIG. 1 is a diagram of a tent; in FIG. 2 - the site of attachment of the plastic panel to the frame; in FIG. 3 - support and guide rollers, cross section.

 The tent of the welder of the main pipelines contains a frame 1, panels 2 fixed on it, forming a roof 3, end walls 4, 5 and side walls 6, 7 with openings 8, 9 for passing, respectively, the pipeline 10 and the passage of people, crosshead 11, supply and exhaust ventilation and lights (not shown). Cloths 2 are made of refractory heat-resistant material. In the side walls 6, 7 of the tent, the openings 9 for the passage of people are equipped with lockable doors. Apertures 8, end walls 4, 5 are equipped with an opening gate 12 with the possibility of fixing their position when the pipeline 10 passes through them. To move along it, the tent is provided with pairs of longitudinally spaced adjustable support 13 and guide rollers 14. When conducting work on an oblique to adjust the position of the tent in height it is equipped with side ski supports 15. To create the necessary microclimate in the tent on its side and end panels, aprons 16 are fixed in their lower part. To give the frame 1 extra rigidity in its corners on the side and end walls fixed basket 17 for storing tools and equipment. When raising the tent for installation on the pipeline or removing from it, the yoke 11 interacts with the latches (not shown) of the gate 12, which are forced to swing open, which eliminates their damage when moving the tent. The electric equipment of the tent is made with the possibility of connecting construction machines to the generator’s own needs and is designed for an operating voltage of 24 V or 36 V.

 In the particular case of the tent, the roof and walls forming the panel are made of transparent plastic material, for example PVC, which allows good daylight transmission. To protect the panel from mechanical influences, for example, by working installers or welders, the forming walls of the panel are protected from the inside by a metal mesh. A special case of the execution of the tent is possible, when the forming walls of the panel are protected from the outside and from the inside by a metal mesh. In the case of work at low temperatures, compensation of the temperature deformations of the panels is necessary to exclude the possibility of damage. In this case, the panels are fixed to the frame by means of spacers 18 made of elastic frost-resistant material, for example, awning two- or three-layer technical fabric reinforced with mesh. Having the necessary elasticity, spacers compensate for the change in the linear dimensions of the frame, panels and prevent their breaks.

 The guide rollers 14 are located on the sides of the pipeline 10 at the level of its horizontal diameter with the possibility of adjustment depending on the size of the diameter of the pipeline.

 Welding of joints in the field is a flow-split method according to the following exemplary scheme. The link of fitter-assemblers prepares the joint for welding the root layer and moves with the centralizer to the assembly of the next joint, and welders impose the necessary layers of the seam, including the facing. At the same time, welding work in route conditions is carried out using multi-post welding DC units. Welding at low temperatures is carried out with the heating of the welding zone to dry it, as well as to reduce the cooling rate of the hardening of the molten metal to reduce internal stresses in the joint and the heat-affected zone. In addition, conduct annealing of electrodes and fluxes to release from residual moisture. The necessary tools, materials and fixtures are stored in tool boxes, baskets 17. For work in the dark, the tent is equipped with internal lights and outdoor floodlights. The tent is based on the pipeline by means of longitudinally spaced pairs of support rollers 13. When conducting work on slopes, adjustable ski supports 15 are used, which ensure its horizontal position. The gaps in the lower part of the tent walls are covered with aprons around its entire perimeter, which allows you to create the necessary microclimate inside the tent. Moving the tent to the next joint can be carried out manually by a link of installers or welders. In this case, the tent rests on the pipeline through the support rollers 13, and the guide rollers 14 provide its lateral stability on the pipeline. The tent moves through the pipeline with the gates open (front and rear), for which the gate lock is lifted manually. The tent is a universal shelter in the installation, welding, stripping and insulation works, including repair work using heat-shrinkable couplings, in the construction and repair of trunk pipelines in various climatic zones at low outdoor temperatures.

Claims (6)

1. The tent of the welder of the main pipelines, containing the frame, the panels fixed on it, forming the roof, end and side walls with openings for the passage of the pipeline and the passage of people, a traverse, forced-air and exhaust ventilation and lamps, in which the panels are made of flame-retardant heat-resistant material, openings the end walls are equipped with opening gates with the possibility of fixing their position when the pipeline passes through them, and for basing on the pipeline and for moving along it, the tent is equipped with steam spaced longitudinally adjustable support and guide rollers, as well as side-mounted height-adjustable ski skis and fixed on the side and end panels in their lower part with aprons, and to give the frame additional rigidity in its corners on the side and end walls, storage baskets are fixed tool and equipment, while raising the tent for installation on the pipeline or removing from it, the yoke interacts with the gate latches, which are forced to swing open, and the electrical equipment Tenting is made with the possibility of connecting construction machines to the generator's own needs. 2. The tent according to claim 1, in which the roof and wall panels are made of a transparent material, for example, PVC. 3. The tent according to claim 1 or 2, in which the walls forming the panel are protected from the inside with a metal mesh. 4. The tent according to claim 1 or 2, in which the forming walls of the panel are protected from the outside and from the inside by a metal mesh. 5. The tent according to claim 2, in which, to compensate for thermal deformations, the forming walls of the panel are fixed to the frame by means of spacers made of elastic frost-resistant material. 6. The tent according to claim 1, in which the guide rollers are located on the sides of the pipeline at the level of its horizontal diameter with the possibility of adjustment depending on the size of the diameter of the pipeline.

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