The installation of pipeline construction equipment is one of the necessary parts in the pipe construction solution, and the installation and construction of pipeline construction equipment is a very important stage in project construction. Due to various factors in the project construction, there are many problems in the installation of pipeline construction equipment. To promote the improvement of the quality of industrial pipeline installation, certain measures need to be taken to control the installation quality of pipeline construction equipment to ensure the smooth construction of the project.
Here is the content list:
l Regarding the quality inspection of pipeline construction equipment installation.
l What are the quality control measures in the installation of pipeline construction equipment?
l Regarding the quality control of pipeline construction equipment after construction.
The sequence of installation of pipeline construction equipment is:
Measuring arrangement→cleaning the construction work area; construction road→conveying anticorrosion pipe→processing tank→distributing pipe→preparing nozzle; pipeline assembly→pipe assembly and welding→welding joint inspection→heat shrinkable casing (tape) bushing→ trench excavation →Appearance repair .
After the installation of pipeline construction equipment is completed, quality inspection is required. After pipeline construction equipment is installed and put into use, regular monitoring is required. Generally, radiographic inspection is used to inspect the quality of pipeline installation. This monitoring has a very good effect on the internal inspection of welded joints. It is widely used in the field of construction equipment installation. This method can also be used to make the quality of the pipeline meet the assessment standard.
Before installing pipeline construction equipment, clarify the construction plan of the construction technicians, use GB/T as the standard, and carry out construction in accordance with national standards and specifications; during the installation of pipeline construction equipment, strictly review the drawings for defects to ensure the rationality of the drawings, and the construction unit It is also necessary to make preparations for pipeline installation and construction, pipeline lumber, welding inspection, construction site management, etc.
Strictly follow the relevant requirements of pipeline construction equipment and pipeline construction requirements to improve the quality of construction. In order to ensure the quality of pipeline installation, quality control is required for key parts such as welding materials, welding processes, and welding seams to ensure pipeline construction equipment. Welding consumables, brands, specifications, etc. are required by the plan design, which are consistent with the project construction requirements to ensure the quality of installation.
① After the pipes, accessories and raw materials used for pipeline construction equipment enter the construction site, the supervisors shall check and accept them on site, and store the materials after passing the acceptance.
② Pipe joints and semi-finished products of pipeline construction equipment should be guaranteed not to be damaged during transportation and storage. When unloading, handle with care and not collide with each other; choose a flat place for stacking pipe joints.
③ The storage temperature of the rubber ring of pipeline construction equipment is between -5 and 30 degrees Celsius. It should not be exposed to ultraviolet light source and keep away from the heat source; the rubber ring and the items that easily affect the rubber ring should not be put together. If the pipeline construction equipment is being constructed In winter, hard rubber rings are not allowed.
④ For trench excavation in open-cut pipeline engineering, the section should meet the design requirements of construction quality, the original soil at the bottom of the trench should not be damaged, and the mechanical excavation should reserve a 200-300mm soil layer for manual excavation and leveling, and the bottom of the trench can be soaked by water And frost damage, if there is gravel soil, lime soil to backfill, the trench wall should be leveled to meet the requirements of construction design.
⑤ For concrete construction, when the pipe seat and flat foundation are poured in layers, the flat foundation should be shaved and rinsed; the concrete should be prevented from segregation, and the concrete should be cured after pouring.
⑥ When pipeline construction equipment is installed, visual inspection and internal cleanliness of the pipeline must be inspected.
⑦ The flexibility of pipe joints must meet the design requirements, and the rigidity must also meet the requirements.
⑧ In the stage of backfilling, the backfill height between both sides of the pipe and the top of the pipe before the hydraulic test of the pressure pipeline is greater than 0.5M, and the pressure-free pipeline shall be backfilled after the closed water test and the closed gas test have reached the standard.
After the completion of the pipeline construction equipment, the finishing work will begin. The unit needs to organize personnel to review the material documents involved in the pipeline installation, project reports, etc.; after the completion of the project, debugging and quality appraisal are required, and the pipeline professionals are organized to conduct quality appraisal of the installed pipelines. The dynamic control of the links will protect the completed pipelines.
In the later stage of the installation of pipeline construction equipment, in order to ensure the smooth completion of the project, the quality of the pipeline needs to be tested again to ensure that the pipeline installation does not have problems such as tilt and cracks, the welding parts are of good quality, and the pipeline is unobstructed. In the later period after the completion of the project, it is necessary to sort out each project data and work files involved in the pipeline construction, do a good job of archiving and backup to evaluate the quality of the pipeline, do a good job in risk control, and carry out the acceptance of pipeline construction equipment.
There are many influencing factors in the installation of pipeline construction equipmentt, so reasonable measures need to be taken to monitor and control every aspect of pipeline construction equipment. With the continuous expansion of the pipeline construction equipment construction industry, the use area is also expanding. Due to the importance of pipeline use, it is necessary to control the pipeline installation quality to ensure that the installation quality reaches the ideal standard!
What is more? WINCOO provide not only pipeline construction solutions, but also pipe spool fabrication solutions for customers from everywhere!
The plate rolling machine is designed to roll the flat plate into a circular arc and cylindrical shape, which is widely used in the container manufacturing industry. It is indispensable equipment for these companies.
Why does the rolling machine need to be sealed?
What is forbidden to workers when operating a rolling machine?
What is a hydraulic rolling machine?
The reliability and service life of the seals in the hydraulic system of sheet metal bending machine are important indicators to measure the quality of the hydraulic system.
In addition to gap seals, seals are used to keep the gap between two adjacent coupling surfaces below the minimum gap through which the liquid to be sealed can pass. The seals in the hydraulic system of sheet metal bending machine are usually contact seals. There are two types of self-sealing compression seals and self-sealing self-clamping seals, also known as lip seals. However, the factors influencing the performance of different seals in the hydraulic system of the sheet metal rolling machine are different, just as with the three-roller roller. In fact, the seal of the hood is still influenced by temperature, pressure and the existing medium.
During the measurement of the roundness of dimensions, the operator of the rolling machine is forbidden to stand on the rolled cylinder, and it is forbidden to stand on the workpiece to be machined. For some difficult-to-process workpieces, such as thicker or larger diameters, high hardness or strength of raw materials, etc., this should be done by a small number of operations simultaneously to achieve the desired effect. For some workpieces with smaller diameters, they should be rolled in the middle of the rollers for operation.
The main features of hydraulic plate rolling machine: the upper roller of the machine can be lifted vertically, and the hydraulic transmission of vertical lifting is achieved by the action of the hydraulic oil in the hydraulic cylinder on the piston rod; The torque is provided, and there are tensioners under the lower roller that can be adjusted. The upper roller has the shape of a drum, which improves the straightness of the product and is suitable for tanks with various cross-sectional shapes with ultra-long specifications.
Hydraulic rolling machines can roll metal plates into circles, arcs and conical workpieces within a certain range. The two lower rollers of this model are active rollers and the upper rollers driven rollers. It is widely used in shipbuilding, boiler, aerospace, hydropower, chemical, metal structure and mechanical engineering industries.
The hydraulic rolling machine is suitable for bending metal plates. It can roll circular, arc and conical workpieces within a certain range and has the function of pre-bending the end of the plate. The two lower roles of this model are active roles. Horizontal movement, the upper roller is a driven roller and can move up and down. There are mechanical and hydraulic movements. The driveshafts are connected by cardan couplings.
To meet these growing demands, WINCOO ENGINEERING CO., LTD has various rolling machines, all of which are more effective, reliable and consistent.
In recent years, with the large-scale application of tank welding machine, the welding quality requirements of tank welding machines are getting higher and higher. The following points should be paid attention to before purchasing tank welding machines.
Here is the content list:
l Know the production performance of tank welding machine in advance.
l Need to understand the characteristics of tank welding machine before buying.
l Detailed description of the purchase reference of tank welding machine.
Applicable materials for tank welding machine:tank welding machine uses ordinary welding wire as the repair material. The materials are: gray iron, ductile iron, stainless steel, carbon steel, die steel, aluminum, aluminum alloy, copper and other conductive metals can be repaired .
Scope of application of tank welding machine: tank welding machine is a professional precision repair welding equipment for small defects such as pinholes, sand holes, pores, cracks, bumps, scratches, pits and mechanical parts surface wear and mold wear. It is widely used in mold industry, foundry industry, electrical appliance manufacturing industry, medical equipment, automobile, shipbuilding, boiler, construction, bridge construction and other industries.
(1) Low heat and normal temperature welding, the matrix does not generate heat, does not produce thermal deformation, the metallographic structure near the welding point is unchanged, there is no stress, no crack, no hard spot hardening phenomenon, and does not affect the machining performance.
(2) Simple operation, multi-purpose in tank welding machine. In addition to the surfacing repair function, it can also strengthen the surface coating of cemented carbide such as tungsten carbide.
(3) Argon gas protection has good adhesion, high welding strength, metallurgical bonding, and re-solidification after the filling material and the matrix are melted at the same time, and the bonding is firm, dense, and does not fall off. After welding repairs, various machining processes such as turning, milling, planing and grinding can be carried out.
(4) The source of tank welding machine is wide, economical and practical, the whole machine is about 30KG, and it can be repaired online.
(5) Rotary self-destructive electrode deposition surfacing welding, easy to operate and high working efficiency.
(6) Environmental protection and no pollution. No harmful gas is generated, it can be directly held by hand, can be seen by eyes, and the welding position is accurate, the welding point is small, and the amount of repair after welding is small.
(7) The tank welding machine repair process is the repeated melting and accumulation of high-frequency welding repair points. No matter the size of the defect, it can be repaired as long as the pen tip can touch.
(8) Pure metal repair, no welding repair trace, welding repair effect meets quality inspection standards.
1. When purchasing tank welding machine products, go to formal manufacturing companies or large shopping malls, and choose brand-name and high-quality products with a high market share. Don't go to a small store for cheap, as the quality of the tank welding machine cannot be guaranteed.
2. Before buying, you can check the operation, conversion and installation of the switch on the panel, the power indicator light is on and off, the fan is normal, whether there is abnormal vibration and buzzing in the power supply part, whether there is a peculiar smell, and whether it is in appearance There are heat generation phenomena such as discoloration to ensure the quality of the tank welding machine and give full play to the performance of the tank welding machine.
3. The dealer can be required to provide a product quality inspection report or certificate when purchasing. Because tank welding machine products are national compulsory certification products, you must confirm whether the product has passed the "3C" certification when purchasing. You can also check online.
4. When purchasing, check whether the nameplate on the product has the name of the manufacturer, production address, specifications, model, welding current adjustment range, load duration, input voltage and current, etc., and then determine what you want to buy according to work needs tank welding machine.
5. Be sure to check whether the product has a grounding screw when purchasing. The grounding screw connection should be well grounded without paint. Whether the movement is clean and the insulation is damaged to ensure safe use. You can also check if necessary.
6. If you want to buy a gas-protected tank welding machine, check whether the accessories are complete, whether the wire feeder is oily, whether it rotates smoothly, whether the connecting cable matches the outer insulation, to ensure the stability of the arc.
What is more? WINCOO provide not only tank welding machines, but also pipe spool fabrication solutions for customers from everywhere!
The edge milling machine is a kind of welding auxiliary equipment that adopts the high-speed milling of the cutter head. It is specially used for welding the steel plate before welding the steel plate. Edge milling machine is widely used in boiler, pressure vessel manufacturing industry, shipbuilding, electric power, petroleum, chemical machinery, engineering machinery manufacturing. Type groove, etc.
What are the advantages of using edge milling machine?
What are the features of edge milling machine?
How to choose a suitable edge milling machine?
1. Edge milling machine has a unique driving function
2. The edge milling machine has a special device to stabilize the machining accuracy
3. Edge milling machine has special cutting all kinds of metal materials
4. Edge milling machine has advanced cutting tools and long-term supply of different blades.
As a substitute for edge planning machine, edge milling machine has the advantages of high efficiency, high precision and low energy consumption. It is especially suitable for the beveling of various shapes of carbon steel plates. Generally, 5-40mm thickness, 15-50 degrees can be adjusted arbitrarily.
The performance of the self-driven edge milling machine:
1. Unique driving function.
2. The special device stabilizes the machining accuracy.
3. Specially cutting all kinds of metal materials.
4. Advanced cutting tools and long-term supply of different blades.
Compared with traditional edge milling machine:
The guide rail installation form is detachable, and through heat treatment, the bed structure is reasonable, the milling head runs more smoothly and reliably, the feeding system and the return system are completely independent, the return speed is fast, the efficiency is high, and the angle of the milling cutter head is easy to adjust. The custom cutter head is interchangeable with the standard cutter head, which is a replacement product of the traditional edge milling machine.
The selection of the edge milling machine sets and selects the basic parameters according to the characteristics of the plan. The characteristic of edge milling machine structure is that it is designed to process typical parts. It is different from the traditional combined milling and an innovative set of special structures, but edge milling machine can meet the processing needs of users.
The selected edge milling machine should follow the following principles:
Edge milling machine must be able to reliably guarantee the realization of all technical requirements on the part drawing.
The edge milling machine must be able to meet the requirements of the production program.
On the premise of meeting the technical requirements and production program requirements, it requires the lowest process cost, low consumption and energy saving.
Edge milling machine can minimize the labor intensity of workers and ensure production safety. Maintain environmental hygiene.
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 provides big pressure vessel, heavy duty pressure vessel, industrial pressure vessel, automatic pipeline construction equipment, electric vertical tank construction solution, etc.
This paper will mainly introduce the unfixing holding-latch hydraulic jack, Hydraulic jack is one of the key products of WINCOO ENGINEERING CO.,LTD.
Here is the content list:
What is the working principle of unfixing holding-latch hydraulic jack?
What are the characteristics of unfixing holding-latch hydraulic jack?
What are the possible faults and solutions in use?
What is the working principle of unfixing holding-latch hydraulic jack?
Hydraulic lifting device (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 jack and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic jack, 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.
What are the characteristics of unfixing holding-latch hydraulic jack?
1.Hydraulic lifting is stable, safe and reliable. The system adopts uniform control and single or partial (several) adjustment can be realized, so the lifting process is relatively stable. Characteristics of unfixing jack determine its good self-locking performance, without tank or heavy object gliding or falling due to power outage, which ensures safe and reliable hydraulic lifting.
2.Construction quality is guaranteed. Lifting height can be precisely controlled because of adjustable function (slightly descending). Welding quality if rank is guaranteed for the reasons given above.
3. Equipment is easy for operation with good working environment and efficiency.
4. The equipment has good adaptability. This set of equipment is applicable to hydraulic lifting of large-scale storage tanks with various volumes ranging from tens of thousands of cubic meters only by regulating hydraulic hoist (unfixing jack, hoisting frame, lifting rod, etc.)
5. Hydraulic pump station can be arranged at proper position as per actual working conditions. For large scale storage tanks, hydraulic pump station can be placed inside the tank, outside the tank or space between two tanks (when one pump station controls two tanks installation) for construction control.
6. Hydraulic pump station has manual and automatic controls with apparent features as strong adaptability and good technical performance price ratio.
7.Short construction period, low cost and good economic returns. Due to high modernization of package unit and fast lifting speed, the unit has low construction cost and good economic returns. The techniques has such advantages as easier for centralized control, convenient operation, safety and reliability (no falling), precise control of weld clearance and lifting height, which guarantees project quality, saves labor and reduces cost with remarkable economical benefit.
8.Unfixing jack is widely used in project installation due to its scientific structural design. The jack is composed of upper clamp, oil cylinder, lower clamp and support. Upper and lower clamps are equipped with self locking device. Upper clamp automatically locks lifting rod when oil cylinder ascends and lower clamp automatically loosens. During stroke return, upper clamp loosens and lower clamp locks lifting rod, thus, lifting rod cannot descend and lift heavy object to designated height step by step. The heavier the object is, the tighter the locking device locks. Heavy objects will not fall even during sudden power cut or oil pipe burst. This lifting mode is proven to be safe and efficient with low cost compared with pneumatic jack, big stroke jack and high altitude stranded wire lifting. These modes are not comparable to unfixing jack in terms of safety and practicability and it is the optimal product and installation for substitution. Unfixing jack is rapidly developed and applied in inversed lifting installation of storage tanks, power plant absorption tower and stack steel lining. This jack has slight descending function, which is convenient for plate to plate butt weld. As long as chaining fixing of support and lifting point are sufficient for bearing object load, the jack can lift object to designated place safely and efficiently.
What are the possible faults and solutions in use?
The jack cannot lift or lifting stroke is inadequate
1. Lifting rod is partially deformed or inclined
A. Shake or vibrate lifting rod prior to lifting. B. Replace or adjust lifting rod straight
2. Upper and lower oil path is mistakenly connected
Connect oil path as specified.
3. Upper and lower clamp block teeth are severely worn. Clamp block support is damaged or spring fatigued or lost
Replace clamp block, base or spring
4. Backspring fractures or severely deforms
5. Insufficient oil supply pressure
Adjust working pressure of oil pump
6. Heavy load
Take measures to decrease load or add jack
7. Jack piston seal is damaged
Replace damaged seal ring
Oil penetration or oil leakage
1. Seal element is damaged, severely worm or invalid for aging
Replace corresponding seal element.
2. Cylinder galling
Repair or replace cylinder
3. Loose connection or damaged seal element
Fasten connection thread or replace corresponding seal element
Oil leakage at quick coupler
Coupler or O-ring damaged
Replace coupler or corresponding O-ring
Stepping up failure
Reversed rotation of motor
Adjust motor rotation direction
Solenoid valve fails
Check and replace new solenoid valve
Low oil level
Replenish hydraulic oil till surpassing red scale
Oil pump severely damaged or worn
Replace oil pump
Above, we introduced the principle of hydraulic jack, characteristics and possible problems and solutions. I believe you have a more detailed understanding of the hydraulic jack. When hydraulic jack homework need the cooperation of all parts, any accessories problems may make hydraulic jack cannot normal use, therefore, to know hydraulic jack structures not only help us to understand the principle of it, will also help us in a timely manner when it fails to distinguish and confirm fault promptly eliminate, can let hydraulic jack to provides us with better services.