In order to ensure the safe daily operation of equipment, the welding construction of pipeline construction equipment must be strictly controlled to reduce the probability of problems. However, the power plant will inevitably encounter some problems during operation, and these problems are often caused by operational defects in the welding construction during the installation of pipeline construction equipment. There are also many factors that lead to operational defects in welding construction, such as inadequate installation technology, overtime or insufficient supervision.
Here is the content list:
l Attention and prevention points in welding construction of pipeline construction equipment.
l Factors that cause problems during pipeline construction equipment construction.
l Dealing with welding quality problems of pipeline construction equipment.
Attention and prevention points in welding construction of pipeline construction equipment.
Inadequate operation during welding of pipeline construction equipment will leave hidden dangers to engineering safety. When conducting inspection and acceptance of metal welds, relevant technicians need to be careful, careful, and concentrate on studying and judging, and feedback and solve problems as soon as possible . The existing places where the safety quality does not meet the standards should be immediately compensated to ensure that the unit can continue to operate safely and maintain the original economic costs.
When performing welding operations on pipeline construction equipment, technicians must take professional welding measures. In addition, they must also control the quality of plumbing counterparts. In particular, the quality of joints and arc closing must be strictly controlled by technicians.
Therefore, the weld must not be welded in one layer, but two or more layers must be welded, and the inter-level joints must be staggered by more than 10 mm. In order to be able to deal with the weld bead oxidation site, the internal argon must be in place when the stainless steel pipe is welded. At the same time, technicians must strictly control the temperature between layers, and use water cooling for welding if necessary.
Factors that cause problems during pipeline construction equipment construction.
At the same time, it is necessary to find out which environmental factors will affect the welding work of pipeline construction equipment, especially some special welding methods and welding materials have certain requirements on the environment. For example, alkaline electrodes should be in an environment without water, rust and oil, while argon arc welding should be in an environment without wind, water, rust and oil.
According to the welding conditions of different pipeline construction equipment, corresponding protective measures should be taken to ensure welding. stable quality. The welding of pipeline construction equipment usually involves the connection between the weldment and the counterpart, and the quality of the connection will directly affect the quality of the welding.
In order to clarify their responsibilities, the technicians of pipeline construction equipment must inspect and accept the corresponding weldments before starting welding. For peers with unqualified quality, welding technicians can choose to refuse welding.
Violations of regulations must be dealt with seriously. In addition, during spot welding, due to the unstable welding equipment, corresponding stresses will be generated under normal conditions and defects are likely to occur. It is the weakest place in the entire welded joint. We must let welders with relevant qualifications perform spot welding operations.
Dealing with welding quality problems of pipeline construction equipment.
There are always problems of this kind during pipeline construction equipment construction, leading to continuous occurrence of welding quality problems. Once there is a quality problem, we can start from these aspects: First, we must investigate and analyze the cause of the problem. In addition to investigating the person directly responsible for the problem, we must also find out the related reasons.
For example, the management of the construction site is not in place or scientific, and the management personnel are negligent. They should not be deceived by the surface phenomenon of the problem, but should be investigated in depth. When penalties are carried out after the investigation, in addition to punishing the relevant responsible persons, it is also necessary to formulate rewards for those who find problems in advance.
The welding acceptance of pipeline construction equipment is the main link in the welding construction process to control the quality. During the inspection, different inspection methods and inspection ratios need to be adopted for different types of welds to meet the welding quality control requirements.
After the inspection, it is necessary to accurately feedback the specific situation with the relevant process at the first time, and find the cause of the welding quality problem in time, and give improvement measures and suggestions to ensure that the welding quality reaches the standard. The inspection work is usually easily restricted by the inspection environment and conditions.
Therefore, testing can only be carried out on finished products. Generally, there are two popular testing methods: destructive testing and non-destructive testing. In actual work, non-destructive testing is usually adopted, which is also the most common one. In non-destructive testing, air tightness testing and non-destructive testing are often used.
Finally, make a summary of the problem and propose rectification measures. The content of the measures must be implemented, and the time, progress, and person responsible for the rectification shall be clarified. Otherwise, the effect of the rectification will be poor. In short, in the pipeline construction equipment construction process, strictly implementing the welding process, controlling the quality of the counterpart, and reasonably requiring the construction period should be the main points of pipeline construction equipment control. At the same time, in the pipeline construction equipment process, set up the welding process witness point and do a good job in process monitoring.
Hydraulic jacking system is mainly used for inverted construction of vertical cylindrical steel storage tank (hydraulic jacking method) and inverted construction of vertical cylindrical low-temperature storage tank in petrochemical industry.It can also be used for vertical lifting and lifting of super large objects.
What are the main features of the hydraulic jacking system?
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 lift 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 2630plate 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 jacking system 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.
Why can we specialize in the production of hydraulic jacking system?
Wincoo Engineering Co., Ltd (WINCOO) is engaged in bringing the most suitable solutions/equipments for client, fabricators, EPC/C companies on pipe fabrication, tank construction, pipeline construction,industrial production lines, clean energy project and other industrial field.
1, We have ability of providing workable solutions to support clients to be awarded with shorter project execution time, fewer man-hour cost and higher efficiency construction/fabrication method and better quality during phase of project bidding.
2, Based client's facility/site space availability, we are able to study/design and present matched configurations on project schedule, quality, cost and productivity to guarantee production pace is accordance with project requirement.
3, To support project execution, we are always ready to work as fireman to give prompt supply on project materials from different consumables, tools, equipments/machines to special merchandise. With flexibility, we are also glad to perform as procurement agent in China to seek required supply resources.
What do you want to know most about buying hydraulic jacking system from us?
1. Support you to win the project during bidding phase. We can provide your more suitable configurations to help you shorten the constrcution time;
2. We can provide all technical documents and advices to support you for construction procedure clearifications;
3. We can calculate the most suitable number of hydraulic jack according to the weight of the tank;
4. We can provide your suitable hydraulic jack accessories with much more competetive price from our long time business partner if you need;
5. We can provide site people training service, and operation service or manpower service or as a subcontractor
If you want to know more about hydraulic jakcing system related information, you are welcome to visit our website
Tank hydraulic jacking system is mainly a closed or meshed hoistway enclosed by buildings or light steel structures and hydraulically driven cylinders to lift the platform.
Here is the content list:
l What are the components of installing a tank hydraulic jacking system?
l What are the performance characteristics of installing tank hydraulic jacking system?
l How to install tank hydraulic jacking system?
Tank hydraulic jacking system is mainly a closed or meshed hoistway enclosed by buildings or light steel structures and hydraulically driven cylinders to lift the platform. Its main components are:
1. Hoistway part: a closed or net-like frame enclosed by a building or light steel structure, with steel guide rails installed on both sides of the inside
2. Driving part: a small oil tank hydraulic jacking system with hydraulic components such as hydraulic driving motor, oil pump, safety valve, speed control valve and reversing valve
3. Oil cylinder part: it is composed of one or more tank hydraulic jacking system of the lifting oil cylinder straight-top platform or jacking scissor frame
4. Door system: It is a closed or net-shaped platform door or landing door system composed of steel structure. There are manual doors and automatic doors. Generally, open platforms do not have doors.
5. Electrical part: it is composed of power, control, signal, safety and lighting devices
6. Platform part: It is a steel structure platform that carries heavy objects. It has a closed type (ie car type) or an open type. Both sides are equipped with guide rollers or guide shoes. The bottom of the platform can be connected with a lifting cylinder or a lifting scissors steel frame
7. Auxiliary part: it is composed of hydraulic pipe fittings, pipelines, pressure gauges and steel structure base
8. Safety device: safety valve, limit limit, door electromechanical interlock, rupture valve, emergency switch and electrical short circuit protection, etc.
The tank hydraulic jacking system is generally equipped with safety protection devices such as anti-falling, overloading, power failure, etc., rail-type external power unit, using hanging chains or cross bars at the entrance and exit of the table, guardrails and lifting platform operating warning lights or warning bells, when the door is opened Many functions such as a safety switch to close the circuit of the elevator platform. It is extremely convenient and convenient for the operator to control multiple points in each working layer, and operate in jog or safe mode.
The large carrying capacity, stable lifting, simple and convenient installation and maintenance, and it is an economical and practical low-floor elevator to replace the ideal cargo conveying equipment. According to the installation environment and use requirements of the tank hydraulic jacking system, different fixed hydraulic jacks can be selected, and different optional configurations can be selected to complete the task of lifting objects and achieve better results.
If the tank hydraulic jacking system requires a large size, a fixed double-span hydraulic lift can be used. The double-span type has stable lifting, large carrying capacity and simple operation. It is widely used in vehicle maintenance, kilns, chemical plants, equipment supporting, etc. Industry use.
The tank hydraulic jacking system is suitable for installation and use under various environmental conditions indoors and outdoors. The tank hydraulic jacking system can be installed in a closed hoistway or between open floors, in a concave foundation pit or on a flat ground according to the requirements of use.
Due to the height of the building or work shelf, the size and weight of the objects carried, and other usage requirements, there are many uncertain factors in the tank hydraulic jacking system model. When the models shown in the list are not suitable for use requirements, the elevation, carrying capacity, platform area, etc. of the lifting platform can be combined according to the actual use environment and operating requirements to achieve the desired use effect.
What is more? WINCOO also provide customers with vairous pipeline construction solutions!
Tank lifted by N sets of 5T-3M model electric chain hoist, 5 tons of electric chain hoist can be used up to 60% of its max tonnage, that is, no more than 3 tons.The max stroke of the electric chain hoist is 3 meter(length can be customized).
Equipment operation steps:
1.First,making the top first circle plate of the tank body on the bottom plate;Then install the expansion ring on the first ring plate(The bottom of the expansion ring is about 200mm away from the bottom edge of the first ring plate);Finally, tighten the ring on the first ring plate with the screw jack.
2.Installed the lifting column on the inner side of the tank 400mm away from the tank wall and N lifting columns are evenly arranged on the inner side of the whole tank.Then the upper end of the column and the bottom plate of the tank are fixed with two pull rods as triangular stay support.
3.Using the pull rod to pull the two adjacent lifting columns to form an integral circle. And a lifting lug is welded on the expansion ring corresponding to the lifting column, the baffle is welded on the tank wall at the upper end of the expansion ring to block the ring.
4.Hang the electric chain hoist on the lifting lug at the top of the column and Hook the hook of the electric hoist on the lifting lug of the expansion ring.Then install all the electric hoist in order and connect the power supply of all electric hoist to the main control board(The main control board can control each electric hoist separately, and can also control all electric hoist centrally and synchronously).
Note:Switch on the total power supply, then pre-tighten each electric hoist, check whether the receiving force of all electric hoist is uniform and check whether all lifting points are normal.If everything is normal, it can be lifted.
5.Switch the main control board to the centralized control and switch on the overall rising button, so that all electric hoist will rise synchronously.In the process of lifting, if some electric hoist fails to work, the master control board shall be converted to separate control. After re-tightening the loose electric hoist, lift it as a whole until it reaches the specified height. Finally, adjust the lifting height to be consistent through separate adjustment.
6.Make the second ring plate, after welding the vertical seam and block, drop all the electric hoist as a whole, and let the first ring plate fall back to the second ring plate, so that the overall lifting of the first ring plate is completed.
7.After the girth seam welding is completed, loosen the expansion ring.And lower the rising ring to the designated height at the bottom of the second ring plate with the electric hoist, and then carry out the preparation for the next lifting.
In the past, specialized welding tank machines are expensive and bulky and inconvenient to transport. Today we are going to introduce another tractor for welding storage tanks.A simple, inexpensive and easy to use straight or flexible rail welder for tank welding.It has the following characteristics:
Product welding features
Product designed features
Product overall using features
1, Equipped with 5 kinds of welding handling techniques, perfect simulation of manual handling, uniform appearance of welding seam, faster and more stable.
2, Weld width 0-30mm wide range adjustment, can adapt to all kinds of thin plate, thick plate welding.
3, Weld width 0-30mm wide range adjustment, can adapt to all kinds of thin plate, thick plate welding.
4, The machine can realize all kinds of distance discontinuous welding, length and speed can be adjusted at will.
5, The machine can demonstrate welding trajectory without ignition, convenient and intuitive.
6, Control panel is full digital display, easy to adjust and record data, with memory function, automatic recovery of the last data when the next use.
7, Automatic stop after welding, limited stop contact is set in the two running directions of the machine, contact point is placed at the end of the weld in advance, automatic stop at the point to prevent over-welding.
1, The sliding track of the machine adopts the linear track specially used for advanced machine tools, which has zero clearance operation, smooth running, no stuck, no deformation, and higher integrity of the machine.
2, All directions of the machine are adjusted by high precision screw pitch, faster, more stable and more accurate.
3, All the parts are processed by advanced CNC machine tools, which greatly improve the accuracy and durability.
4, The whole high temperature spraying process + aluminum oxidation, so that the overall appearance of the machine to a higher level.
5, Equipped with special robot welding gun, welding quality is better and more stable.
1, The machine is integrated design, easy to use, while reducing all kinds of messy external control lines, effectively prevent damage to the line and control, make the working environment more concise.
2, The lengthened magnetic seat on the track reduces the weight and number of switches with the same suction force, making it easy to install even for a woman.
3, The design of the special connecting plate for the track end is noteworthy. The bolt is used in the forward direction, which can connect two or more tracks into a longer whole. Bolt reverse use, can make the track fast, accurate lap, so that the length of infinite cycle.
4, Machine drive and control all adopt AC 20V voltage, more safe.
5, The professional welding gun used by this machine can be adapted to different welding gun joints, no matter you are using other welding machine, can be used perfectly.
6, The machine comes with toolbox is our company's original creation. The tool box is easy to use and durable. Some necessary small tools are stored in the tool box, which can reduce the time for users to search for tools and improve work efficiency. It is equipped with: fuse, welding gun conductive nozzle, all kinds of inner square Angle wrench, box ruler, notepad, pen, etc. When a perfect weld is adjusted, the weld parameters, the voltage and current of the welding machine and various parameters on the control panel of the machine are recorded. When the same weld is encountered next time, input parameters and perfect copy of the weld.
7, Flexible and convenient to use, non-welder can weld a perfect weld, one person can operate more than one machine at the same time, greatly reduce labor costs, improve the quality of weld, improve work efficiency.
WINCOO ENGINEERING CO.,LTD specializes in the production of a variety of tank welders, if you want to know more, welcome to enter our official website.