With the continuous development and progress of my country’s science and technology, my country’s demand for oil and gas resources has become greater and greater. In order to promote the development of my country’s economic construction and meet people’s normal lives, ground construction is an important link in the process of oilfield development and exploration to ensure production The key means of safety, especially the installation of pipeline construction equipment and the construction technology of gathering pipelines, play an important role.
Here is the content list:
l On the characteristics of the corporate piping system.
l About the characteristics of pipeline construction equipment welding.
l Analyze the causes and characteristics of common problems during welding of pipeline construction equipment.
On the characteristics of the corporate piping system.
Among all the equipment in power plant operation, pipelines are one of the most indispensable equipment, which are concentrated in EH oil pipelines, lubricating oil pipelines, jack shaft oil pipelines and boiler fuel oil pipelines. Such pipelines are generally ordinary 20 steel. Or 18-8 type stainless steel material, the related pipeline construction equipment has rich specifications and small pipe diameter.
The number of welds on the upper level of pipeline construction equipment is relatively large, and at the same time they are densely distributed; some pipeline welds are not easy to find and are relatively hidden, which often causes some problems during welding operations; especially stainless steel, which is high in chromium. Alloys and material types are unusual. Usually, when pipeline construction equipment is used, relatively large intergranular corrosion and hot cracking will occur, and the difficulty coefficient when completing welding work is relatively large.
About the characteristics of pipeline construction equipment welding.
Welding of pipeline construction equipment requires argon arc welding. For oil pipelines with a diameter of less than 60 mm or a thickness of 5 mm, the welding process for pipeline construction equipment can be full argon arc welding; if the diameter of the pipeline is greater than 60 mm If the thickness is greater than 5 mm, the relevant technicians need to change the welding process to argon arc welding bottom arc welding cover.
The key reason for this is that in stainless steel, the content of cr is already above 13%. A little carelessness will cause oxidation or excessive burning of the welding root. Therefore, when welding pipeline construction equipment, it is necessary to Argon filling or mixing of inert gas is carried out inside, so as to achieve the protective effect and ensure the welding construction quality of pipeline construction equipment.
Analyze the causes and characteristics of common problems during welding of pipeline construction equipment.
In recent years, some power plants have been shut down due to pipeline weld leaks or due to the quality of system welds. The existence of such phenomena will not only have a very bad impact on the overall operation, but also make the safety of the plant fall into threat situation.
In the construction of pipeline construction equipment welding engineering, there are two defects in welding, namely surface and internal defects. Surface problems can be discovered by the naked eye, but internal defects cannot be discovered in time by only relying on the senses. At this time, technicians and detection instruments are required to inspect pipeline construction equipment. Only through accurate inspection of the instrument can the problem be clearly known. Where is the root cause.
The welding quality of pipeline construction equipment will have a great impact on the operation of the unit. In other words, if the operation of the unit does not stop, it is probably because the pipeline construction equipment has welding quality problems.
Why do these problems occur in pipeline construction equipment? The reasons can be found from the following aspects:
l Because the pipeline construction equipment design unit only gave the system diagram but not the layout diagram, the construction personnel carried out the construction based on the site conditions and construction experience. The welding technicians did not know the location and quantity of the welding joints, so they could only make visual inspections or estimates based on their own experience. There will be a shortage in the number of weld inspections, which increases the probability of missing weld inspections;
l In the welding process of pipeline construction equipment, relevant technical personnel did not pay much attention to the particularity of the pipeline medium of the oil system, resulting in a low proportion of non-destructive inspections and potential safety hazards;
l When inspecting the welds of pipeline construction equipment, the relevant technicians usually only pay attention to the welds of the main parts and start the inspection, ignoring the inspection of other common welds, which may easily cause omissions;
l There are irregularities in the direction and layout of construction pipelines and brackets of pipeline construction equipment, and even stress and other reasons. As a result, the weld is not only the weakest part of the pipeline, but also the source of the first problem;
l Because the construction period of pipeline construction equipment is tight or there are requirements on the schedule, some who do not have welder skills or do not hold welder certificates will also temporarily serve as welding technicians. Such personnel who have not received professional welding training usually operate They are all conventional and ordinary welding skills. In the welding operation of pipeline construction equipment, there are problems such as insufficient sense of responsibility and low attention. At the same time, the quality of the plumber’s counterpart is not up to the standard and the awareness is relatively weak. Such problems will lead to pipeline construction equipment. There are quality problems and safety hazards in the weld joints.
Wincoo Engineering Co., Ltd (WINCOO) is committed to providing customers, manufacturers, EPC/C companies with the most suitable pipeline construction equipment solutions, involving pipeline manufacturing, storage tank construction, pipeline construction, industrial production lines, clean energy projects and Other industrial fields.
Here is the content list:
l What are the advantages of the working principle of pipeline construction equipment?
l What are the advantages of the basic structure of pipeline construction equipment?
l What are the advantages of pipeline construction equipment construction technology?
What are the advantages of the working principle of pipeline construction equipment?
Pipeline construction equipment adopts pipeline fixation, and the welding car travels to various positions to automatically perform pipeline welding. The welding process is efficient and low in cost.
The pipeline construction equipment includes the all-position automatic welding machine, which is composed of a welding control system, a welding trolley with a welding gun, a welding power source, a wire feeding device and accessories. The following specifically introduces the product parameters of pipeline construction equipment:
Applicable tube greater
Tube wall thickness
CS, SS, AS, low temperature steel (SS with special guide rail)
Suitable seam welded
pipe to pipe, pipe to elbow, pipe to flange
Stepper motor wheel and gear/worm drive
Buttons for increasing and decreasing speed
Our company's proprietary technology product,/rotary stepping motor
The company's proprietary technology product, digital tube
What are the advantages of the basic structure of pipeline construction equipment?
The pipeline construction equipment mainly consists of pipe fittings, valves, measuring instruments, supports and hangers, etc., which are connected with the gathering and transportation pipelines through production equipment to form the entire gathering and transportation system to complete the transportation of oilfield production media.
There are many types of pipe fittings used in pipeline construction equipment, mainly low-alloy steel, low-carbon steel, etc. According to the different pressures of gathering and transportation pipelines, they are divided into low-pressure, medium-pressure, and high-pressure pipelines. When selecting the material of the pipeline construction equipment, it must meet the design requirements, and no heavy skin shrinkage should occur. At the same time, the threads and grooves of the pipe fittings must meet the requirements of use during processing.
What are the advantages of pipeline construction equipment construction technology?
Under normal circumstances, groundwater or various sulfides will have a certain corrosive effect on pipeline construction equipment during operation. Therefore, to ensure the safety of pipeline construction equipment, it is necessary to strictly control the materials of gathering pipeline equipment. Corresponding anti-corrosion measures shall be taken in pipeline construction equipment according to the actual situation.
After our actual investigation of the ground and site soil conditions, we have correctly inferred the corrosivity, and formulated scientific and reasonable anti-corrosion measures based on the analysis results, and used the correct anti-corrosion technology. At present, the anti-corrosion material often used in pipeline construction equipment is asphalt. The application of asphalt in pipeline construction equipment anti-corrosion has the characteristics of low cost, good effect and large application area.
WINCOO has the ability to provide feasible pipeline construction equipment solutions to support customers in obtaining shorter project execution time, less man-hour costs, more efficient construction/manufacturing methods and higher quality in the project bidding phase.
According to the customer's facility/site space availability, we can research and provide matching configurations in terms of project schedule, quality, cost and productivity to ensure that the production schedule meets the project requirements. To support project execution, WINCOO is ready to work as a firefighter to quickly provide project materials from various consumables, tools, equipment/machines to special commodities. With flexibility, we are also very happy to act as a procurement agent for pipeline construction equipment in China to find the required supply resources.
We currently have three types of tank jacking system, which are advanced tank jacking system, chain tank jacking system and simple tank jacking system.Advanced tank jacking system has the most advanced hydraulic jacking technology available.Today we talk about the advanced tank jacking system.
Here is the content list:
What is the working principle of advanced tank jacking system?
What are the product components of the advanced tank jacking system?
What are the construction steps of advanced tank jacking system?
Advanced tank 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 advanced tank jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters advanced tank 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.One Module include
2.1 set x Power Pump Station: Hydraulic power supply, motor power 4KW, rated flow is about 15l/min.
3.5 sets x jacking cylinder: 25 tons rated (18 tons, 100%) (Including Hydraulic Jacking Device Components — Steel Cables, Support Device, Pull Rod, etc.)
4.5 sets x oil hoses system:One tank construction needs one jacking control system. Each jacking control system includes:
5.1 set x Electrical Controls and operating panels:
1.1 centralized PLC operation control box,
2.1 power source cabinet
With the concentrated push-button and automatic PLC control system or single-set handle operated control.
Motor and PLC are with brand of SIMENS
Main electric element are Schneider brand
Hose with USA and China JV famous brand
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.
Above we talked about the working principle of advanced tank jacking system,equipment components and installation steps.If you need to know more, please visit our website for more information about advanced tank jacking system.
hydraulic storage tank lifting equipment is suitable for various lifting operations with small lifting height. It consists of oil chamber, oil pump, oil storage chamber, piston, crank handle, oil valve and other main parts.
What should I do when there is a problem with the control system of the hydraulic storage tank lifting equipment?
Before using hydraulic storage tank lifting equipment, what should be paid attention to avoid malfunction?
What is the reason why the temperature of hydraulic storage tank lifting equipment is too high and cannot be lifted?
Countermeasures adopted: the hydraulic control system of hydraulic storage tank lifting equipment should be replaced immediately for maintenance due to common failures; maintain the cleaning of the hydraulic transmission system, and clean the filtration system (including the emulsion tank) on time; the key components of the hydraulic control system of the hydraulic press (such as Hydraulic seals) are very damaged to maintain, spring yellow parts should be sampled and tested on time, valves should be tested for characteristics, welding leaks should be repaired after dismantling the internal hydraulic seals, and pressure tests should be performed as required.
1. The weight of the object must be estimated before lifting, and remember to overload it.
2. When using, the center of gravity of the object must be determined, the focus point of the jack should be selected, and the placement should be stable. At the same time, the degree of softness and hardness of the ground must also be considered. If necessary, a tough wooden board should be padded to prevent skewing or even tipping during lifting.
3. This hydraulic storage tank lifting equipment is only used for jacking up. After the heavy object is jacked up, it should be supported by tough support (vehicle support, tough wood or other materials) to prevent the failure of the jack. Danger.
4. If several thousand hydraulic storage tank lifting equipment are used together, the lifting speed should be kept synchronized, and the load of each hydraulic storage tank lifting equipment should also be balanced, otherwise there will be a danger of tipping.
5. hydraulic storage tank lifting equipment should avoid sudden vibration when using it.
What is the reason why the temperature of hydraulic storage tank lifting equipment is too high and cannot be lifted?
There are several reasons for the high temperature of hydraulic storage tank lifting equipment: 1. Not enough hydraulic oil; 2. Too dirty hydraulic oil; blocked filter element; 3. Low pressure of safety valve; 4. Damaged working pump; In order from easy to difficult to rule out.
With a large number of suppliers, we can choose the right suppliers according to customers' requirements and provide the most cost-effective products. WINCOO ENGINEERING CO., LTD provide big pressure vessel, heavy duty pressure vessel, industrial pressure vessel, automatic pipeline construction equipment, electric vertical tank construction solution, etc.