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●What is the hydraulic jacking system?
●How does the hydraulic jacking system lift the tank?
●How much weight can the hydraulic jacking system lift?
Hydraulic jacking system is an important machine for tank construction. The equipment is mainly used for inverted construction of vertical cylindrical steel tank (hydraulic lifting method) in petrochemical industry, inverted construction of steel liner in power plant chimney and inverted construction of vertical cylindrical low temperature tank.
At present, we have three types of hydraulic jacking system in WINCOO Engineering Co., LTD. They are the following three: Advanced hydraulic jacking system, Simple unfixing Holding -latch hydraulic Jacking system and Simple chain type hydraulic jacking system.
Hydraulic jacking system (package unit) is evenly distributed around tank inner wall. Tank top and upper (the first layer) wall plates are lifted first and then install and weld wall plates of tank body. Self locking hydraulic jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic jacking system, upper clamp fastens and lifts lifting rod and expansion ring and mobilize tank (including tank top) to ascend upward. When oil returns to jack, upper clamp returns with piston and lower clamp automatically fastens lifting rod without gliding. The jack repeats the movement and make lifting rod ascend with tank to designated height (spare height for next layer of plate). After butt weld of next layer of wall plates, open upper and lower loosening device and loosen upper and lower clamp to make lifting rod and expansion ring descend to lower expanded and welded rib plate of the next layer of wall plates and then lift. Repeat the process and ascend welded tan till the last layer of wall plates are installed and welded. The installation of the whole storage tank is completed.
1.The number of hydraulic cylinders used for the same size tank is different according to the actual use and weight of the tank.
2.Regardless of tank size, hydraulic cylinder installation must be evenly distributed.
3.Construction of different tanks and selection of YT series hydraulic lifting equipment number and calculation of lifting equipment load rate specification: lifting equipment load rate must be less than 80%.
For example, for a storage tank with a volume of 50,00m3 and a diameter of 60m, the maximum weight of the lifting body of the tank is 536T (excluding the weight of the bottom plate of the tank), 40 hydraulic cylinders of YT25-2700 are selected, and the output force of each hydraulic cylinder is 250KN, so the total output force of the lifting device is 25O×40=10000KN.The load rate of the lifting equipment is 536x9.8÷10000×100%≈52.53%, which meets the requirement of less than 70%.
The above is our brief introduction to the hydraulic jacking system. If you have any questions, you are welcome to browse other relevant articles and products on our website. I hope the above content will be helpful to you.
Hydraulic jacking system is an important machine for tank construction. The equipment is mainly used for inverted construction of vertical cylindrical steel tank (hydraulic lifting method) in petrochemical industry, inverted construction of steel liner in power plant chimney and inverted construction of vertical cylindrical low temperature tank. I will give you a detailed introduction of the hydraulic jacking system.
What are the characteristics and applications of hydraulic jacking system?
What are the types of hydraulic jacking system?
What is the working principle of hydraulic jacking system?
What are the construction steps of hydraulic jacking system?
●Application
1.The hydraulic jacking system are mainly used for vertical tank top to bottom construction.
2.Also it can be used for mega work piece jacking or lifting.
●Features
1.The system consists of hydraulic pump station, cylinders, steel wire, and strokes. Easy to installation and operation;
2.The system utilizes PLC central control to handle lift. Each power pack is equipped with auxiliary balance device to guarantee the precision of simultaneously lifting.
3.Hydraulic jacking system pump station has subsidiary manual control and central control two operation models. The cylinder can be adjusted to lift separately or to lift with several others as one group, and multi groups can also be integrated to lift reach better precision and better welding effect.
4.All the cylinders are with safety valve. It can be automatically locked to avoid cylinder/ tank dropping even under situation of power off, high-pressure hose broken, burst.
5.The cylinder is with one high pressure hose to avoid oil leaking that usually happen by the traditional multiple hoses. Cylinder will return to initial condition by itself weight.
6.Stroke of Hydraulic cylinder is 1475mm, which can satisfy each annular shell with 2500 plate one-step lift. Greatly reduce the time waste.
7.Hydraulic cylinder basic height is 2050mm, which can match automatic girth welding machine to proceed internal girth seam welding.
8.Module configuration, the hydraulic jack quantity can be adjusted as per different size of tank and weight
9.High efficiency, each time lifting or falling down only needs around 15 minutes.
10.Can well cooperate with our tank welding machines, which can greatly reduce the manpower cost and reduce the construction time; Usually one Horizontal seam welding machine can match 6-10 skilled welder. Vertical seam welding machine can match around 20-30 people skilled welder and butt/fillet welding tractor can match 6-15 skilled welder.
At present, we have three types of hydraulic jacking system in WINCOO Engineering Co., LTD. They are the following three: Advanced hydraulic jacking system, Simple unfixing Holding -latch hydraulic Jacking system and Simple chain type hydraulic jacking system.
Hydraulic jacking system (package unit) is evenly distributed around tank inner wall. Tank top and upper (the first layer) wall plates are lifted first and then install and weld wall plates of tank body. Self locking hydraulic jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic jacking system, upper clamp fastens and lifts lifting rod and expansion ring and mobilize tank (including tank top) to ascend upward. When oil returns to jack, upper clamp returns with piston and lower clamp automatically fastens lifting rod without gliding. The jack repeats the movement and make lifting rod ascend with tank to designated height (spare height for next layer of plate). After butt weld of next layer of wall plates, open upper and lower loosening device and loosen upper and lower clamp to make lifting rod and expansion ring descend to lower expanded and welded rib plate of the next layer of wall plates and then lift. Repeat the process and ascend welded tan till the last layer of wall plates are installed and welded. The installation of the whole storage tank is completed.
The following short description gives the working procedure in outline. It can in certain details be modified when required.
1.The tank bottom – plates are placed on the prepared foundation and welded together.
2.The beams or lattice work of the roof are assembled and finally joined to the upper rim of the shell ring.
3.The hydraulic jacking system is installed in the tank. The plates of the second shell ring (next to the top ring) are positioned outside the first one.
4.The completed part of the tank (roof and top shell ring) is lifted hydraulically to a height at which the plates of the second ring can be moved into place and the roof sheeting can be completed.
5.The plates of the second shell ring are located exactly and welded together to the lower edge of the first ring.
6.The plates of the third shell ring are placed outside the second shell ring.
7.The completed part of the tank (roof the two uppermost shell rings) is lifted.
8.The above cycle of operations is repeated until the last (bottom) shell ring is finished.
9.The entire tank is lowered down to the bottom plate and welded to this.
10.The lifting equipment is dismantled.
Hydraulic jacking system is mainly used in large tank construction. WINCOO ENGINEERING CO.,LTD is supplying tank hydraulic jacking system to tank contractors worldwide.
In actual operation, in order to ensure that the installation quality of pipeline construction equipment meets the construction requirements, targeted solutions must be taken according to the problem and its cause. The following will explain the installation of pipeline construction equipment before, during and after installation.
Here is the content list:
l Regarding the control of pipeline construction equipment before construction.
l Regarding the control of pipeline construction equipment during construction.
l Regarding the control of pipeline construction equipment after construction.
Regarding the control of pipeline construction equipment before construction.
Before construction, in order to ensure that the material of the pipeline construction equipment used meets the industrial requirements, strict inspections need to be repeated, including repeated verification and review of the construction drawings, and careful inspection of the pipeline processing drawings to ensure that the pipelines in the drawings The processing regulations and calculated data meet actual requirements.
In addition, it is necessary to check whether the pipeline construction equipment required for installation has a quality certificate and whether the specifications and models of the pipeline correspond to the certificate, and whether it meets the corresponding installation requirements of the pipeline construction equipment.
Before construction, check the pipeline construction equipment for damage and other quality defects that affect the construction. In order to get a more accurate understanding of the pipe material, professional quality inspection instruments can be used. For example, high-pressure pipelines can be detected by the monitoring method of magnetic flaw detection. Ensure that the material of pipeline construction equipment meets industrial production requirements.
In terms of capital investment in the installation of pipeline construction equipment, manpower, materials, and instruments and tools used are the main capital consumption objects. Manufacturers need to have a detailed grasp of the use of funds to reduce costs as much as possible without affecting the quality of the project. When selecting manpower, low-skilled workers should be employed for jobs with low technical requirements. When selecting materials, pipeline construction equipment is often selected for comparison. Before construction, it is also necessary to conduct professional skills training for construction personnel to enhance their work skills.
Regarding the control of pipeline construction equipment during construction.
During the installation process, when the pipe is cut according to the drawings, it is necessary to use the corresponding operating tools and methods to cut according to the construction requirements and the pipe material to avoid damage to the pipe. When connecting pipes, the main construction methods are hot bending and cold bending.
Hot bending is performed in the pipeline construction equipment installation process after heating treatment, specialized functional personnel make it deform according to the construction requirements; cold bending is carried out at room temperature, the pipeline construction equipment deforms according to the construction requirements. Since heating will cause mechanical deformation of the pipeline, cold bending processing methods are mostly used in the construction process. In hot bending, different heating fuels, heating pipeline construction equipment, and heating techniques must be used according to different pipeline materials and construction requirements, and the heating temperature must be strictly controlled.
The hot-bent pipes must be maintained after installation to ensure their quality and durability. When welding, due to the different materials of the pipeline and the different connection methods of the pipeline during the laying process, the welding tools and techniques selected will be different. The welding technology requires high requirements, and the construction personnel need to have good experience and technology to make the pipeline can be Therefore, experienced technicians should be selected for the welding process during the installation of pipeline construction equipment, and professional equipment should be used for testing after the welding is completed to see if seamless welding has been achieved to meet the engineering requirements.
Regarding the control of pipeline construction equipment after construction.
After the completion of the pipeline construction equipment, quality inspection and maintenance of the pipeline are required. When performing quality inspections, professional monitoring equipment is generally used, such as radiographic inspection, which can achieve non-destructive inspection. When the test is in progress, a unified test standard shall be adopted in compliance with the relevant technical standards, with special attention to whether the units used are unified.
After the pipeline construction equipment is installed, in order to better ensure the quality of the pipeline, it needs to be treated with anti-corrosion treatment. Generally, paint is applied to isolate the pipeline and the air in the water and oxygen from chemical reaction and rust. Extend the service life of the pipeline, and also improve the safety of operations for those who perform production operations.
Pipeline construction equipment is widely used in industrial production and has strict quality requirements. Due to the different pipeline construction equipment used in different industrial production environments, it is easy to have some problems during the installation process, which will affect the quality of the installation project. To ensure pipeline construction the installation quality of equipment meets the requirements of industrial production, and the installation process needs to be carried out in strict accordance with the construction requirements.
In order to give full play to the advantages of pipeline prefabrication equipment and overcome the limitations of fixed pipe spool fabrication line, we have developed a movable pipe spool fabrication line, which has been used in PetroChina, Sinopec, and China National Chemical Corporation. So, what are the precautions for the quality inspection of the pipe spool fabrication line?
Here is the content list:
l About the quality inspection content of the pipe spool fabrication line.
l The product parameter mark on the pipe spool fabrication line.
l How to inspect the pipe spool fabrication line?
The pipe spool fabrication line consists of a work station for pipe beveling, a work station for pipe mechanical assembly, a work station for automatic pipe welding, a steel structure work station frame that can be quickly disassembled, a trolley railing system and a light rail to form a transportation system.
The testing items of the pipe spool fabrication line include: density, melt mass flow rate, hydrostatic pressure, ring stiffness, flatness, ring flexibility, thermal stability, volatile content, moisture content, carbon black content, carbon black dispersion, Pigment dispersion, gas component resistance, rapid crack propagation resistance component analysis, component content detection, etc.
The comprehensive performance of pipe spool fabrication line will reach a high level in China:
1. In the detailed design, China's most advanced "Pipe Manufacturing Design System" software is used to realize the rapid drawing of the pipe spool fabrication line. After the IDF interface module is configured, the design data of the PDS and PDMS design institutes can be directly shared, so a "seamless combination" is realized between design and construction.
2. In the manufacturing management, the domestic first-class "pipe manufacturing and installation management system" software is used to realize all-round information management of the entire pipe spool fabrication line manufacturing process.
3. Pipe spool fabrication line groove adopts a reliable pipeline groove mobile workbench, two of which are used for pipe groove.
4. Roller bed type pipe plasma cutting and beveling machines have been used to cut pipes and form bevels in one step through thermal cutting and processing.
5. An efficient pipe cutting band saw machine and a fixed radial pipe end beveling machine are used to cut the pipe and machine the bevel according to the working procedure.
6. The unique mobile workstation for pipe mechanical assembly in China has been used for weld assembly to mechanically assemble pipe shaft welds.
7. Cover pipe welding adopts advanced automatic pipe welding movable workstation, pipe spool fabrication line automatic welding machine is used to realize efficient automatic cover pipe welding of pipe shaft.
8. The logistics transportation adopts the light rail transportation system, the station frame and the trolley railing system. The light rail transportation system is used for long-distance mechanical logistics transportation, and the station frame is used for transportation. The overhead railing system is used for container internal and external logistics transportation.
9. The pipe spool fabrication line project has a production capacity of 3000 inches/year and a day's production capacity of 1000 inches/day, which meets the huge engineering demand for prefabricated pipelines.
Pipe spool fabrication line has now been widely used in all aspects of people's lives, and unqualified pipes directly affect people's quality of life and health. At the beginning of 2014, some media exposed the problem of individual companies using recycled waste to produce drinking water distribution pipes and fittings, which had a bad social impact. So how to enter the site to inspect the pipe spool fabrication line?
The material, specification, model and quality of the pipe spool fabrication line and pipe fittings should meet the current national product standards and design requirements.The appearance quality of the pipe spool fabrication line should not only meet the requirements of its product standards, but also the following requirements:
l There are no defects on the surface such as cracks, shrinkage holes, slag inclusions, folding, heavy leather, and rust or dents that do not exceed the negative deviation of the wall thickness;
l The thread surface is intact without damage, and the flange sealing surface is flat, smooth, without burrs and radial grooves;
l The gasket has no aging deterioration or delamination phenomenon, and no defects such as wrinkles on the surface.
l Inspection quantity: all inspections. Check the factory inspection report and certificate.
l Inspection method: observe and inspect.
l The size, wall thickness and allowable deviation of the pipe spool fabrication line should meet its product standards and design requirements.
l Inspection Quantity: 20% of the products of each specification and model are randomly checked by the number of pieces, and no less than 1 piece
l Inspection method: measure with steel ruler and vernier caliper.
For the pipe spool fabrication line belonging to one of the following conditions, sampling shall be conducted by the supervision engineer, and the inspection and re-inspection shall be carried out by a qualified inspection unit. The re-inspection results shall meet the current national product standards and design requirements.
What is more? WINCOO provide not only pipeline construction solutions, but also pipe spool fabrication solutions for customers from everywhere!
The plasma and flame cutting machine is a portable multifunctional plasma welding, cutting, high energy flame heating equipment.
What are the precautions for the use of plasma and flame cutting machine?
Compared with similar products, what are the characteristics of plasma and flame cutting machine?
What are the advantages of plasma and flame cutting machine?
1. Points to be paid attention to in forging cutting
Due to the thicker oxide scale on the surface of the forging and the fact that the ignition point of the oxide scale is higher than the melting point, the plasma and flame cutting machine is prone to cutting interruption during cutting, resulting in reduced cutting quality and reduced work efficiency. For this reason, when the forging is cut, the oxide scale on the upper and lower surfaces of the cutting area should be removed before cutting to improve the cutting speed and cutting quality.
2. The main points of anti-deformation in rolling billet cooling bed tooth plate cutting
How to control the deformation of the workpiece during cutting is very important. For example, arranging the cutting route according to the routine will cause the workpiece to be deformed and out of tolerance. Even if it is reshaped, it is difficult to meet the size requirements, and the product will eventually be scrapped. Therefore, it is very important to arrange the gas cutting route of the plasma and flame cutting machine reasonably.
3. Points to be paid attention to in thick plate cutting
In thick steel plate cutting, the temperature decreases from the top surface down. At the beginning of cutting by plasma and flame cutting machine, the oxygen pressure is gradually increased, and finally reaches a uniformity in the thickness direction of the steel plate. This results in inconsistent combustion in the thickness direction of the steel plate at the starting position of cutting, and defects at the starting end of the workpiece cutting.
Compared with laser cutting: plasma and flame cutting machine is far less than laser cutting machine in terms of cutting speed accuracy and cutting material types, but it is better than laser cutting machine in cutting thickness and cutting cost.
Compared with high-pressure water jet cutting machine: the precision of high-pressure water jet cutting machine and the types of cutting materials are better than plasma and flame cutting machine, but plasma and flame cutting machine are larger than water jet cutting machine in cutting speed and cutting thickness, and the equipment The cost and cutting cost are relatively low.
The plasma and flame cutting machine can be used for drawing, programming, nesting, verification and CNC cutting of any shape parts. Improve the steel nesting rate, effectively save steel; improve the efficiency of programming, nesting and cutting, and effectively improve the cutting production efficiency.
Great products begin with the best engineering staff, and WINCOO ENGINEERING is ready to assist you with your technical requirements for plasma and flame cutting machine.
The welding machine for large storage tanks is a kind of tank in which oil, natural gas and other energy sources are stored. Because the tank body is too large, it cannot be shaped at once. It is made of steel plates and spliced together, so a welding machine is required in the splicing process. Although manual welding is the simplest and most direct method, it has high cost and low welding speed. Therefore, the automatic tank welding machine is widely used.
What is the working principle of tank welding machine?
What are the characteristics of tank welding machine?
What are the characteristics of using tank welding machines?
Tank welding machine uses high-energy laser pulses to heat the material locally in a small area. The energy of the laser radiation diffuses through heat conduction into the material and the material is melted to form a specific melting pool. Tank welding machine uses a new type of welding process. Laser welding is mainly aimed at welding thin-walled materials and precision parts, it can spot welding, butt welding, staple welding, seal welding, etc. to realize. The aspect ratio is high and the width of the weld is small. Small heat affected zone, low deformation, fast welding speed, smooth and beautiful weld, no need or easy treatment after welding, high weld quality, no pores, precise control, small focusing spot, high positioning accuracy, easy automation.
In contrast to the current round welding machines on the market, the tank welding machine of the MSHW series offered by WINCOO Engineering is equipped with a dual drive system as standard. This self-propelled submerged welding system can reduce tank welding time on site by 40%. Welding errors are greatly reduced, saving tank installation costs. The circumferential welding machine is suitable for top-down or bottom-up constructions of single- or double-wall storage tanks for internal and external welding. There are four standard units, but our design allows us to offer custom mounting units for non-standard applications.
Horizontal seam welding machine is responsible for welding flat corners and fillet seams in large tank automatic welding machines; therefore, it is also referred to as flat welding machine and fillet seam welding machine. It is used for welding the top and bottom of large pipes and for fillet seam welding. The horizontal seam welding machine uses a special power supply for submerged welding, which can meet the construction environment on site with good welding stability and without interference during operation. The welding power supply can guarantee trouble-free continuous operation for 8-10 years or even 15 years. Equipped with a magnetic adsorption device, it is suitable for welding seams with large angle and wind protection circuits and other tank positions.
With a large number of suppliers, WINCOO ENGINEERING CO., LTD can select the right suppliers according to customers' requirements and offer the most cost-effective tank welding machines. We offer large pressure vessels, high performance pressure vessels, industrial pressure vessels, automatic pipeline construction equipment, electrical solutions for vertical tank construction, etc.
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