38results about How to "Avoid hot work" patented technology

The invention discloses an adjustable steel beam in-place mounting device, and belongs to the field of steel structure engineering construction. The device comprises a U-shaped clamp sleeve, an adjusting component, a split bolt and an in-place plate. The U-shaped clamp sleeve is formed by welding an upper clamping plate and a lower clamping plate through a vertical plate, a clamping groove capable of containing a steel beam flange plate is formed between the upper clamping plate and the lower clamping plate, and an adjusting bolt hole is formed in the lower clamping plate. The adjusting component comprises a base plate, an adjusting screw rod and an adjusting nut, and the base plate is arranged between the upper clamping plate and the lower clamping plate of the U-shaped clamp sleeve, and is connected with the U-shaped clamp sleeve through the adjusting screw rod and the adjusting nut. The in-place plate is a rectangular plate strip with a split bolt hole, and is in welding connection with the upper clamping plate of the U-shaped clamp sleeve. The device is suitable for in-place mounting of various common steel beams with an H-shaped section or I-shaped steel beams, and the hosting speed of the steel beams is effectively improved. Damage caused by welding and cutting of the in-place plate to base metal is avoided, meanwhile, material consumption is reduced, and construction cost is saved.

The invention discloses an annular kiln with a movable flat top. The annular kiln with the movable flat top comprises a kiln body, a kiln crown and kiln walls arranged on the two sides. Compared with the prior art, the annular kiln with the movable flat top is characterized in that the kiln crown is the movable flat top, wherein the movable flat top is formed by detachably connecting a plurality of steel structural frames which are in lap joint with one another; each steel structural frame is provided with idler wheels, wherein the idler wheels are matched with tracks arranged at the upper ends of the kiln walls; the lower end face of the movable kiln crown is provided with an insulating layer; a hot gas recycling pipeline is arranged on the kiln crown. The annular kiln with the movable flat top has the advantages of saving money, and being convenient to place, high in degree of mechanization, capable of lowering labor intensity for workers and improving work efficiency, good in heat preservation effect when green bricks are fired, high in rate of finished products, rapid in cooling speed, easy to cool for brick taking, convenient to maintain, and particularly suitable for overall transformation of an existing old kiln.

The invention relates to a coiled tubing suspension device and a coiled tubing wellhead mandrel type suspension structure and method. The coiled tubing suspension device comprises a tubing head, a tubing hanger, a heavy load connector and a lower connector, wherein the tubing hanger is arranged in the tubing head, the tubing hanger, the heavy load connector and the lower connector are sequentially arranged from top to bottom, an adapter pup joint is connected between the bottom of the tubing hanger and the top of the heavy load connector or a suspension pup joint and a setting pup joint are sequentially connected from top to bottom, the bottom of the heavy load connector is connected with the top of the lower connector, the heavy load connector and the lower connector both sleeve the outer side of the top of a coiled tubing, and a locking ring is arranged between the lower connector and the coiled tubing; the outer wall of the locking ring is slidably connected with the inner wall of the lower connector, and the inner wall of the locking ring abuts against the outer wall of the coiled tubing. According to the coiled tubing suspension device, the technical problems that a suspension device for suspending the gas well coiled tubing is complex in structure, wellhead operation is inconvenient, and the matching cost is high are solved.

The invention discloses a centralized control oil replenishment system and a decentralized oil replenishment method. The centralized control oil replenishment system includes a control system, an oildistribution system, liquid level detection modules and on/off control modules. The oil distribution system comprises a main oil tank, an oil pipeline and at least two sub oil tanks. The control system is connected with the liquid level detection modules and the on/off control modules. The main oil tank is connected with the sub oil tanks through the oil pipeline. The on/off control modules are arranged in the oil pipeline. The liquid level detection modules are arranged in the sub oil tanks. The on/off control modules and the liquid level detection modules are in one-to-one correspondence with the sub oil tanks. The liquid level detection modules detect the oil level signals in the sub oil tanks, the control system obtains oil replenishment signals according to the oil level signals, theon/off control modules carry out opening/closing according to the oil replenishment signals, so that timely and accurate automatic oil replenishment is realized. Through automatic oil replenishment, the safety of employees is ensured, the work efficiency is improved, and oil waste caused by over-replenishment and production stoppage caused by under-replenishment are avoided.

The invention relates to a sectional electric heating thermal oven for drying polyacrylamide and a using method, and relates to the technical field of chemical equipment. An oven base and an oven body are connected through an oven bottom plate, and heating pipes are arranged in a first-section heating area, a second-section heating area and a third-section heating area and installed in the oven body from bottom to top; the heating pipe in each section of heating area is controlled by a first-section detection piece, a second-section detection piece and a third-section detection piece respectively in a linkage manner; a feeding auger device is mounted on one side of the oven body; an external fan separator is horizontally installed on one side of the oven body through a flange and a gasket, the external fan separator is located below the feeding auger device, a main stirring fan is erected outside the oven body, the output end of the main stirring fan is rotationally connected with blowing fan blades, and the blowing fan blades are located in the oven body and located under the external fan separator. The sectional electric heating thermal oven for drying polyacrylamide has the advantages that sectional heating is conducted, the temperature of the tempering stage before materials are discharged from the oven can be effectively controlled, and thus the material drying effect is better.

The invention discloses a solar battery assembly device and belongs to the technical field of solar battery assemblies. The repairing device comprises a support, a base and a control device. The support is provided with an X-direction mobile mechanism, the X-direction mobile mechanism is provided with a Y-direction mobile mechanism, and the moving direction of the X-direction mobile mechanism and the moving direction of the Y-direction mobile mechanism are perpendicular to each other and parallel to the ground. The Y-direction mobile mechanism is provided with a Z-direction mobile mechanism, the moving direction of the Z-direction mobile mechanism is perpendicular to the ground, and the Z-direction mobile mechanism is provided with a rubber grinding head driven by a motor. The X-direction mobile mechanism, the Y-direction mobile mechanism, the Z-direction mobile mechanism and the rubber grinding head are all controlled by the control device to move. The support is further provided with an assembly fixing device. According to the repairing device, a traditional manual work mode is changed, the health of workers is guaranteed, the repairing quality and efficiency of the assembly are improved, and therefore the repairing device is quite practical.

The invention relates to a flowmeter flange dismounting device which comprises a dismounting module used for dismounting rusted fixing bolts, a flowmeter frame installed on a flowmeter flange and a pipeline flange frame installed on a conveying pipeline flange, and pipeline flowmeters used in a steel plant are different in size and form. However, most pipelines are connected through flanges, but fixing bolts of the flanges are prone to corrosion and rusting due to the fact that the field environment is severe, and when the pipeline flow meters need to be maintained or replaced due to faults, the flanges of the pipeline flow meters and the fixing bolts of the pipeline flanges cannot be disassembled normally due to rusting. In the prior art, a rusty fixing bolt in a flange needs to be fused through air welding, but the field environment belongs to a gas area, large potential safety hazards exist in fire operation, the efficiency of manually disassembling the rusty fixing bolt is low, and production of enterprises can be greatly influenced. Therefore, a device capable of guaranteeing safety and rapidly disassembling the rusted fixing bolt needs to be developed.

The invention relates to a bridge crane diving platform structure and a mounting process thereof. The bridge crane diving platform structure comprises a first assembly, a second assembly and a third assembly which are assembled in sequence from the front to the back. The mounting process of the first assembly comprises the step that when a left side door frame and a right side door frame are assembled, the first assembly is mounted to the right position. A mounting process of the third assembly comprises the steps that when a front girder is lifted to an eight-meter jig frame, a diving platform truss is located and mounted with the center line of a landside upper cross beam as the baseline; and the height of the third assembly is adjusted, and it is guaranteed that a cab is level with the third assembly. A mounting process of the second assembly comprises the steps that after the door frames, the front girder and a rear girder are assembled, the second assembly is preassembled; then the first assembly, the second assembly and the third assembly are bound with coir ropes; diving platform lower support bolts are loosened; the height of the first assembly is adjusted so that the first assembly can be aligned with the third assembly; and then the second assembly is connected to the first assembly and the third assembly properly. The bridge crane diving platform structure and the mounting process thereof have the beneficial effects that an improved diving platform is simple in structure and convenient to mount; fire work is effectively avoided; and the second assembly which is finally mounted is small, and large-size hoisting equipment such as vehicles is not needed to be used when bolts are screwed, so that equipment cost is saved.

The invention relates to the technical field of water turbines, in particular to a method for replacing a sealing part of an operation oil pipe utilizing a tackle device. The method involves the tackle device, wherein the tackle device comprises a base, a jack and a supporting plate; and rolling wheels are arranged at the bottom of the base, the bottom end of the jack is fixedly connected to the base, and the supporting plate is connected to the top end of the jack. The method for replacing the sealing part of the operation oil pipe utilizing the tackle device has the beneficial effects that extra welding of angle steel is not needed in the replacement process of the sealing part, so that the replacement efficiency of the sealing part is greatly improved, the workload of operators is reduced, fire operation is effectively avoided, and the operation safety is improved; and the tackle device is high in flexibility, the weight of the operation oil pipe can be stably borne, and the position of the operation oil pipe can be adjusted in the vertical direction and the axial direction, so that convenience in the replacement process of the sealing part is improved.

The invention discloses a special electrical cabinet suitable for a complex environment, which comprises a box body and an insulation box buried underground. Two symmetrically arranged heat storage grooves are formed in the side wall of the box body, and a U-shaped heat exchange tube communicated with the two heat storage grooves is inserted into the inner wall of the insulation box in a penetrating manner. A similar-U-shaped airflow pipe communicating with the interior of the box body is inserted into the inner wall of the insulation box in a penetrating mode, a pumping groove is formed in the top of the box body, a rotating cylinder is rotatably connected to the top of the box body in a penetrating mode, and rotating blades are fixed to the upper portion of the rotating cylinder. The electrical cabinet has the advantages that the insulation box is arranged and buried under the ground, so that the internal temperature of the insulation box is relatively stable, the heat storage grooveis formed, a good heat insulation effect can be achieved, meanwhile, water flow in the heat storage groove flows, absorbed heat is continuously discharged, the low temperature of the heat storage groove is guaranteed, and therefore rising of the internal temperature of the box body is avoided; and normal work of components in the box body in an effective temperature is ensured.

The invention discloses a support corbel structure and a using method thereof. The support corbel structure comprises a corbel base and a corbel supporting frame, wherein the structure also comprisesa pressing plate and a limiting and adjusting mechanism used for adjusting clamping force between the corbel base and the pressing plate; the corbel supporting frame is connected with one side away from the pressing plate of the corbel base. Compared with the conventional method, the damage to steel structure stand column bodies can be avoided; the fire operation is avoided, so that the occurrenceof fire can be effectively prevented; through the mounting method, a large amount of labor cost can be reduced; the removably assembled corbel structure is firm to mount and easy to operate, and is economical and practical.

The invention provides an oil-gas pipeline pit defect repairing method. The oil-gas pipeline pit defect repairing method has the advantages of being reasonable in design, easy in operation, free of fire, low in cost and good in repairing effect. The method comprises the following steps that 1, the outer surface of a pipeline pit is pretreated, an anti-corrosion layer is removed, and cleaning and drying are carried out; 2, the pipeline pit is coated with polyurethane, and repairing is carried out until the surface of the defect part is flat; 3, aramid fiber cloth is wound around the pipeline pit filled with the polyurethane; 4, a plurality of layers of carbon fiber cloth is wound around the surface of the aramid fiber cloth layer by layer in a staggered mode; and 5, after the carbon fiber cloth on the outermost layer is bonded, the surface of the pipeline is ground and cleaned for anti-corrosion treatment to complete pipeline pit defect repairing. According to the method for repairing the defect of the pipeline pit by filling and winding the pipeline with various composite materials, theoretical guidance is provided for concave repairing design of an oil-gas pipeline, and the methodhas important significance in optimizing the pipeline repairing method, repairing the defect of the oil-gas pipeline and improving the operation safety of the pipeline.