Anyone with a little mechanical knowledge knows that energy can be transformed into each other. It is best to apply this knowledge to the tank hydraulic jacking system to explain the power loss of the hydraulic system. Next, we will introduce in detail how to maintain the tank hydraulic jacking system.
Here is the content list:
l Maintain the tank hydraulic jacking system from the perspective of power source.
l Maintain the tank hydraulic jacking system from a pressure perspective.
l Maintain the tank hydraulic jacking system from the perspective of speed regulation.
Maintain the tank hydraulic jacking system from the perspective of power source.
On the one hand, the power of tank hydraulic jacking system will cause energy loss and reduce the overall efficiency of the system. On the other hand, this part of the energy lost will be converted into heat energy, which will increase the temperature of the hydraulic oil and the deterioration of the oil. The tank hydraulic jacking system is malfunctioning. Therefore, when designing a tank hydraulic jacking system, under the premise of meeting the requirements of use, full consideration should be given to reducing the power loss of the system.
First of all, considering the power source-pump, considering the diversified working conditions of tank hydraulic jacking system actuators, sometimes the system requires large flow and low pressure; sometimes it requires small flow and high pressure.
Therefore, it is appropriate to choose a pressure-limiting variable pump, because the flow rate of this type of pump changes with the change of the system pressure. When the tank hydraulic jacking system pressure decreases, the flow rate is relatively large, which can satisfy the fast stroke of the actuator. When the tank hydraulic jacking system pressure increases, the flow rate decreases accordingly, which can meet the working stroke of the actuator. This can not only meet the working requirements of the actuator, but also make the power consumption more reasonable.
Maintain the tank hydraulic jacking system from a pressure perspective.
Second, when hydraulic oil flows through various types of hydraulic valves, there will inevitably be pressure loss and flow loss. This part of the energy loss occupies a large proportion of the total energy loss.
Therefore, reasonable selection of hydraulics and adjustment of pressure valve pressure are also an important aspect of reducing power loss. The flow valve is selected according to the flow adjustment range in the tank hydraulic jacking system and its minimum stable flow can meet the requirements of use. The pressure of the pressure valve should be as low as possible when the hydraulic equipment is working normally.
Maintain the tank hydraulic jacking system from the perspective of speed regulation.
Third, if the actuator has speed regulation requirements, when selecting a speed regulation loop, it is necessary to meet the speed regulation requirements while minimizing power loss. The speed control circuits of common tank hydraulic jacking system mainly include: throttle speed control circuit, volume speed control circuit, volume throttle speed control circuit.
The throttling speed control loop in the tank hydraulic jacking system has large power loss and good low-speed stability. The volumetric speed control circuit has neither overflow loss nor throttling loss, which has high efficiency but poor low-speed stability. If the tank hydraulic jacking system needs to meet both requirements at the same time, a volume throttling speed control circuit composed of a differential pressure variable pump and a throttle valve can be used, and the pressure difference between the two ends of the throttle valve should be as small as possible to reduce pressure loss.
In summary, a reasonable choice of hydraulic pressure is crucial. When the hydraulic oil flows in the pipeline, it will exhibit viscosity, and when the viscosity is too high, it will generate greater internal friction, causing the oil to heat up, and at the same time increase the resistance when the oil flows. When the viscosity is too low, it is easy to cause leakage, which will reduce the volumetric efficiency of the tank hydraulic jacking system.
Therefore, generally choose oil with suitable viscosity and good viscosity-temperature characteristics. In addition, when the oil flows in the pipeline, there are pressure loss and local pressure loss along the way. Therefore, when designing the tank hydraulic jacking system pipeline, the pipeline should be shortened as much as possible while reducing the number of bends.
The above are the recommended maintenance points to avoid the power loss of the oil tank hydraulic jacking system. However, there are many factors that affect the power loss of the tank hydraulic jacking system. Therefore, if specific maintenance is performed on the storage tank hydraulic jacking system, other requirements should be considered comprehensively!
Since entering Chinese market for more than 10 years, products of Wincoo Engineering Co.,ltd has been sold in nearly thirty provinces, cities and autonomous regions in China, and some overseas markets. The company has production line of advanced technology; meanwhile, Wincoo Engineering Co.,ltd designs, develops and processes products for famous domestic installation companies. With professional team, strict management and excellent equipment, the company strives to create the brand of "WINCOO", hydraulic hoist and series supporting products. As an expert of hydraulic hoist, WINCOO with charm of high technology is keen, innovative and forging ahead to establish design language of the company. In an all-inclusive and absorbing and open-minded manner, the hydraulic hoist and hydraulic pump station are perfectly combined to form hydraulic lifting equipment (hydraulic jack). As the founder and disseminator of hydraulic hoist, WINCOO has been building the inverted hydraulic jack and production technology of installation engineering for a long time.We are going to explain how to use the hydraulic jack safely.
●Safe operation code of hydraulic jack
●Precautions for the use of hydraulic jack
●How to repair and maintain hydraulic roof in daily use
1. Hydraulic lifting equipment must be operated by specialized operators;
2. Ground wire must be installed for hydraulic pump station;
3. Check whether motor is rotating in pump indicated direction after startup; motor for this equipment is step-down startup with six second interval. Supply oil for jack after full start of the motor; exhaust air in system via exhaust valve before lifting;
4. Rated pressure for hydraulic system is 25Mpa and pressure indication of pump station pressure gauge cannot exceed 26Mpa;
5. Check clamp block of upper and lower clamps for slip during jack lifting. If block teeth are filled with foreign matters, clean on time and clean the taper sleeve outside block. Grease the taper surface to reduce sliding friction between taper surface and block arc; if teeth shaped surface is severely worn more than 0.4mm, replace block on time. Remove upper and lower clamps and clean after each project. Check wear condition and replace when necessary;
6. Check whether exhaust valve is closed before lifting;
7. Increase pressure slowly during adjustment;
8. System pressure can be at 28Mpa for a short time. Avoid long-term operation for damaging the system;
9. Do not crash high pressure oil pipe with hard objects. Avoid welding slag scorching. Replace high pressure rubber pipe for loss on time;
10. Release the pressure in system via exhaust valve when replacing hydraulic components;
11. Lift jack for a few millimeters when loosening clamp. Unload lower clamp and loosen it;
12. Loosen all lower clamps for butt joint and check; if looseness is inadequate, do not descend jack for opposite joint to avoid lower clamp damage;
13. Adjust pressure precisely when jack is ascending or descending in place. Do not put solenoid valve at neutral position to avoid instantaneous overvoltage;
14. Long-term overload operation is prohibited;
Hydraulic oil level in oil tank should be regularly maintained to normal level. Due to large capacity chamber of piping and hydraulic cylinder, it is mostly required to fill adequate hydraulic oil. After startup, hydraulic oil enters pipeline and cylinder, oil level decreases and filter even shows above oil level. Replenish hydraulic oil once again. It’s inevitable that hydraulic oil has loss during use, therefore, observe oil level regularly and replenish on time to maintain it at the middle position of level meter;
Hydraulic oil shall be kept clean always. Use oil filter vehicle when filling hydraulic oil with filtration precision below 30υm;
Replacing cycle for hydraulic coil is one year for normal operation;
Discharge all residual oil in tank when replacing hydraulic oil and refill after cleaning the tank. Filtration precision of new oil shall not be lower than precision of the system. Oil amount in tank shall be maintained within fixed level range;
Oil temperature shall be appropriate, not more than 60℃. Check for abnormal oil temperature rise. Start hydraulic pump and operate as required after oil temperature reaches 15 ℃ during winter;
Pay attention to the following for initial startup of hydraulic pump:
1) Hydraulic oil level in the tank shall be at the full position of vernier;
2) Check rotation direction of motor and it shall be clockwise seen from motor tail (arrow direction). If the direction id reversed, stop immediately and regain operation after handling;
3) Step up after 10 minutes’ idle operation of pump station;
Pay attention to check return oil filter. Replace cartridge for damage on time;
Before starting and stopping hydraulic pump, unload the overflow valve;
Spares for wear parts (seal ring, clamp block, etc.) shall be available at all times for timely replacement;
Set pressure of overflow valve cannot exceed maximum pressure of hydraulic system;
Check and maintain the jack before operation to ensure there is no oil leakage, clamp and the whole machine is in good condition;
When inserting lifting rod, the jack shall be loosened (loosening nuts at upper and lower clamps are screwed upward in place). Note that lifting rod and jack shall be almost concentric. Reset upper and lower clamps for normal operation and make the jack in operating state;
Prevent mud and sand from entering hydraulic rubber pipes during connection to avoid damaging hydraulic system and the jack;
Overpressure (overload) is prohibited during operation;
Lifting height shall exceed 20-30mm of coaming height and make jack piston at middle position for butt weld;
Make the jack at lifting state when descending the rod and oil pressure cannot be higher than that during lifting, that is to adjust oil pressure below that during normal lifting and then loosen lower clamp. After the jack is back stroke and lifted steel plate falls on newly surrounded plates, the jack bears no load. Loosen upper clamp and lifting rod descends;
According to actual ambient temperature, it is decided to use N46 anti-wear hydraulic oil for the system and mix of other grades is prohibited;
Clean and maintain the jack on time after one project, especially attachment at clamp block teeth. Replace for severe teeth wear and repair the replaced jack.
Time for inspection
Monitor operating status during equipment operation
System pressure is stable and within specified scope.
Noise and vibration
Within 15-60℃, not more than 60℃
Within 105%-85% of rated voltage
For oil leakage of the system
Inspect before startup
Whether at red scale of level meter
Whether overflow valve is loosened
Whether ground wire is installed for pump station
Screw and pipe joints
Regular fastening: once a month
Oil filter and air filter
Regular inspection: once a month
Valve plate of oil tank pipeline
Regular inspection: dismantle, clean and replace sealing during overhaul
Specify as per working conditions and temperature, replace once every 3-4 years generally.
Specify as per working conditions and element quality. Replace for damage on time.
Hydraulic oil pollution test
Test after 1000 hours’ operation of the newly replaced hydraulic oil.
Sample with dedicated container to avoid pollution.
Sample the operating heated oil instead of static oil.
Sample 300-500ml each time.
Test oil plants test report and incorporate the result into equipment record.
Specify inspection cycle as per equipment usage.
High pressure rubber pipe
Specify replacement cycle as per working conditions.
Specify performance inspection of pump, valve, etc. as per working condition.
Hydraulic jacking system as a widely used tank lifting machine, its safety is widely supported and proven.What we said above is more to help you know how to use the hydraulic jack safely and correctly. I hope you found this helpful.
In recent years, large-scale pipeline projects have started one after another, and the level of mechanical equipment of pipeline construction solutions has been steadily improved. However, the management of pipeline construction equipment on the construction site has not kept up with the speed of pipeline engineering and mechanical equipment updates, resulting in a high rate of equipment failure and maintenance on the construction site. High cost, low technical performance and low utilization rate. In response to these situations, explore standardized maintenance in the management of pipeline construction equipment.
Here is the content list:
l Regarding the maintenance status of pipeline construction equipment at the construction site.
l What are the specific measures to achieve standardized maintenance of pipeline construction equipment?
l How can companies ensure the effective implementation of pipeline construction equipment maintenance procedures?
l Objective conditions cause pipeline construction equipment maintenance to be unable to be carried out normally. Pipeline construction has a large geographic span, harsh construction environment, and increased equipment component wear, which directly affects the stability and reliability of the equipment, causing the mechanical equipment to lose basic performance and fail to operate normally. In addition, the current project schedule is very tight. In order to catch up with the schedule and grab the schedule, it is difficult to keep up with the daily maintenance of pipeline construction equipment.
l Subjectively neglect.The subjective factor that causes the on-site pipeline construction equipment maintenance to be unable to be carried out normally is that the relevant units and management personnel do not pay attention to the equipment management. In many construction companies, the management of the company, project management, and construction crews do not pay much attention to the management of pipeline construction equipment, believing that the equipment is just a tool for wear and tear during the construction process, which emphasizes use rather than maintenance. Many construction projects and construction units arbitrarily extend the maintenance cycle of pipeline construction equipment, reduce the grade of accessories and lubricants, so that the overhaul cycle of the engine is shortened due to human factors, project maintenance costs increase, and the cycle of equipment failures is prolonged. The technical performance of pipeline construction equipment has severely declined.
l Weak technical management capabilities.The quality of equipment maintenance has declined. First of all, many on-site management personnel's understanding of on-site maintenance of pipeline construction equipment is still at the level of "replacement of the three oil filters", and the maintenance of the engine, chassis and working devices is not included in the pipeline construction equipment. Maintenance plan in progress. Secondly, the equipment operators and maintenance personnel do not have a high level of basic skills and cannot complete the overall overhaul of pipeline construction equipment with high quality.
Repair and maintenance of pipeline construction equipmentt is very important. First of all, we must regularly check, maintain and replace vulnerable parts. WINCOO will provide manuals with the machine, such as high-performance pipeline construction equipment, automatic pipeline construction equipment, small pipeline construction equipment, high-precision pipeline construction equipment, easy-to-maintain pipeline construction equipment, etc. The following are specific measures:
① In view of the low maintenance quality of pipeline construction equipment, by compiling comprehensive, meticulous, and highly operable procedures, not only can we clarify what tasks the pipeline construction equipment operators and maintenance personnel need to do daily maintenance and secondary maintenance, but also tell them How to work.
② While compiling maintenance procedures for pipeline construction equipment, the company also compiled checklists for standardized maintenance and management of various types of pipeline construction equipment, making it the main basis for management departments at all levels to inspect pipeline construction equipment, and unify inspection standards and assessment scores. Standards to facilitate the recording, filing and review of equipment inspections and inspection results.
① Personnel training. Strengthen the learning and training of pipeline construction equipment supervisors,managers, and maintenance personnel to change their concepts, fully understand the importance of maintenance to the use of equipment, and cultivate long-term perspectives and implementation of pipeline construction equipment maintenance, and completely avoid the first phase The situation where the project "eaten" a batch of pipeline construction equipment. Through regular learning and training, the standardized equipment maintenance procedures are deeply rooted in the hearts of the people, and become the working guidelines and working habits of operators and repairers, rather than the work requirements of the superior management department. Through learning and training, to a certain extent, the sense of responsibility and dedication of managers at all levels has also been improved.
② Innovate the system of deciding people and machines. In order to mobilize the enthusiasm of equipment operators to rationally use pipeline construction equipment, earnestly maintain pipeline construction equipment, and sincerely care for pipeline construction equipment, the company strictly implements the system of determining personnel and equipment, and integrates the personnel and equipment management information system to control the attendance and equipment of the operators. The intactness of the pipeline construction equipment is linked together, and the man-hours for equipment maintenance are included in the actual man-hours of the operator.
① Increase the intensity of rewards and punishments for pipeline construction equipment inspection. In order to ensure the implementation of the standardization of pipeline construction equipment on-site maintenance, the company pays special attention to the intensity of inspection rewards and punishments for pipeline construction equipment when revising the management system.
② Link the maintenance of pipeline construction equipment with bonuses. In order to motivate the construction unit to use and maintain the pipeline construction equipment, the project department regards equipment maintenance as an important assessment index when formulating the economic responsibility system assessment, guiding the construction unit to use the maintenance pipeline construction equipment rationally, controlling the construction progress and avoiding the problem to the greatest extent.
In order to ensure that pipeline construction equipment maintenance procedures can be effectively implemented, the company has formulated corresponding management systems and adopted specific measures to supervise the implementation of these systems.
l Divide maintenance responsibilities. In the management system, the corresponding responsibilities of equipment operators, pipeline construction equipment maintenance personnel, unit equipment managers, and project pipeline construction equipment managers are clarified, and these responsibilities are written into the maintenance procedures manual of each type of equipment, so that all levels of pipeline construction equipment Managers can see what they should do every day and how to record their work in the maintenance procedures.
l Promote standardized pipeline construction equipment maintenance procedures. Implement standardized equipment maintenance organization processes in each construction project to ensure smooth equipment maintenance channels and optimize the maintenance force of the entire project.
l Establish a professional maintenance team. The project department mobilizes skilled fitters, electricians, and repairers to form a professional maintenance team, which is conducive to the unified scheduling of maintenance forces for the project, and ensures low failure rate and high utilization of pipeline construction equipment.
What is more? WINCOO provide not only pipeline construction solutions, but also pipe spool fabrication solutions for customers from everywhere!
The solution of container tube coil production line is to prepare the installation. It is less difficult to prefabricate, so try to make pipe sections that can be prefabricated on the floor, which can speed up construction progress and reduce construction difficulties.
What is the production capacity of the solution of container tube coil production line?
What kind of equipment do we need for the solution of container tube coil production line?
What is the installation process in the Solution of Container Pipe Spool production line?
Production capacity: 36.000 diameter inch/year
Applicable tube diameter: DN50-600
Applicable pipe length: 0-12m
Applicable tube weight: 0-12T
Bevel shape: U, V, Double-V
chamfer speed: ≦5min (DN200 SCH40)
Conveyor speed: 2-20m/min
Automatic welding rate: ≧60%
Production rate: 50%-80%
Design software: PDSOFT PSFMS
Management software: PDSOFT PSFMS
The Pipe Spool Fabrication Line consists of seven steps: blasting→cutting→chamfering→adjusting→welding→non-destructive testing→paint spraying.
1. Blasting machine
We need to know the size, weight, material and degree of cleanliness of the workpiece, then we can offer you the suitable machine.
2. Cutting machine
There are three types of cutting machines: band saw cutting machine, 5-axis CNC burning and plasma cutting and profiling machine, as well as cutting and chamfering in one.
We need to know the size, weight, material of the workpiece, then we can offer you the suitable machine.
①Bandsaw machine is cold cutting, suitable for carbon steel, stainless steel, there are four lines 2-24 '', 8-32 '', 12-48 '' and 24-60 ''. It's PLC control, with fixed length function.
②5AXIS CNC Burning and Plasma Cutting and Roll Forming Machine is hot cutting, suitable for carbon steel. It's also PLC control.
③Cutting and chamfering in one is cold cutting, and there are three lines: 2-16 '', 2-12 '' and 2-8 ''.
3. The groove shape of bevel facing machine is J, U, V, X etc. It is a PLC or CNC control. 48'', 24-48'' and 24-60''.
We need to know the size, weight, material of the workpiece, then we can offer you the suitable machine.
4. Fitting-up machine
5. Welding machine, the welding process is root pass→filling→capping, there are two kinds of welding machines: split type and cantilever type.
6. Non-destructive testing is NDT, there are three testing methods: RT, UT and X-Ray.
7. Paint spraying can be reached through the spray booth.
We need to know the size and shape of the workpiece, then we can offer you a suitable machine.
The installation sequence in the solution of container pipe spool production line is the process of installing the prefabricated pipe sections and pipe equipment (valves, flow meters, etc.) at the position coordinates indicated in the drawing. It is generally installed in connection with equipment or steel construction. As a rule, it is better to prefabricate and assemble: a group of three, a master, a welder and a mechanic, sometimes a crane is required. First, the prefabricated pipe piece is pulled to the position to be installed, and then begin welding and installing according to the direction, flow direction, size, coordinates and orientation specified in the drawing. After completion, the installation is completed, and then the mounting installation is carried out, the pressure test is deleted and the work can be delivered.
Wincoo Engineering Co., Ltd (WINCOO) has been focused on developing and producing solutions for the manufacture of container tube coils for several years, and is committed to providing perfect service to every customer around the world.