Recently, HBS We use a Accord evaporator Therefore, when installing the connecting pipe, an additional step of comparing the lengths of the retaining plate and the screw can prevent it piercing the evaporator
Why the screw will piercing the evaporator
What are the new generation of automated bending solutions?
The next generation of automated bending solutions include the following:
1. Automatic bending machine: Automatic bending machine adopts advanced numerical control technology and mechanical structure, which can automatically complete the bending operation through program control. It has the characteristics of high precision, high efficiency and stability, and can realize the bending of complex shapes.
2. Robot-assisted bending system: This solution combines the robot with the bending machine to realize the automatic loading and unloading and positioning of the workpiece by the robot, and improves the automation of the entire bending process. Robot-assisted bending systems can be adapted to different sizes and shapes of workpieces and are flexible and versatile.
3. Intelligent control system: The new generation of automatic bending solutions also includes intelligent control systems using artificial intelligence and machine learning technology. This kind of system can automatically identify workpiece characteristics and process parameters by learning and optimizing algorithms, realize intelligent bending process control, and improve production efficiency and product quality.
4. Automatic process planning software: The automatic bending solution can also be equipped with advanced process planning software, which can automatically generate the optimal bending path and process parameters through three-dimensional modeling and simulation analysis of the workpiece, providing fast and accurate processing solutions, reducing manual intervention and improving production efficiency.
The emergence of these new generation of automated bending solutions has made the bending process more intelligent, efficient and precise, meeting the modern manufacturing industry's requirements for fast, flexible and high-quality production.
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Introduction to the principles and operation methods of tensile testing machine
Measuring principle of tensile machine:
1.The force value of the tensile testing machine is measured through a load cell, amplifier and data processing system. Under the premise of small deformation, the strain e at a certain point of an elastic element is proportional to the force on the elastic element, and also proportional to the elastic deformation. Taking the S-type testing machine sensor as an example, when the sensor is subjected to the effect of tensile force P, since a strain gauge is attached to the surface of the elastic element, and the strain of the elastic element is proportional to the magnitude of the external force P, the strain gauge is connected to the measurement circuit. , you can measure its output voltage and then measure the force.
2. The deformation of the tensile machine is measured through the deformation measuring device, which is used to measure the deformation of the sample during the experiment. The device has two chucks, which are connected to the photoelectric encoder installed on the top of the measuring device through a series of mechanical mechanisms. When the distance between the two chucks changes, the shaft of the photoelectric encoder is driven to rotate, and the photoelectric encoder There will be a pulse signal output. This signal is then processed by the processor, and the deformation of the sample can be obtained.
3. The principle of measuring the displacement of the tensile machine beam is roughly the same as that of the deformation measurement. The displacement of the beam is obtained by measuring the output pulse number of the photoelectric encoder.
How to operate:
(1) Regarding the loading and unloading of specimens: The round specimen is clamped in the center of the round jaw clamp, and the specimen is clamped. The flat specimen must be perpendicular to the fixture and cannot be skewed. The clamping part must be long enough, at least 3/4 of the length of the clamping block. When the upper and lower chucks are clamped, it is prohibited to raise or lower the beam.
(2) Regarding force value clearing: used to display sampled data, there is a sensor bar on the main interface of the software. The electronic tensile testing machine can display the values of 4 types of sensors, namely test force, displacement, extensometer, and peak force. Usually after clamping the test piece and installing the extensometer, each sensor must be cleared before the test can be started. However, the reset of the force sensor is more special. First, clamp the upper chuck of the stretching fixture, then adjust the lower beam to the appropriate position, clear the force value, and then clamp the lower chuck.
(3) Permanent deformation: After the load is removed, the material still remains deformed.
(4) Yield point: When the material is stretched on an electronic tensile testing machine, the deformation increases but the stress remains unchanged. This point is the yield point. The yield point is divided into upper and lower yield points, and the upper yield point is usually used as the yield point. Yield: The load exceeds the proportional limit and is no longer proportional to the extension. The load will drop suddenly, and then fluctuate up and down over a period of time, and the extension will change greatly. This phenomenon is called yielding.
(5) Yield strength: When stretching, the load at which the permanent elongation reaches a certain specified value is divided by the original cross-sectional area of the parallel part.
(6) Spring K value: the ratio of the weight of the force in the same phase as the deformation and the deformation.
(7) Effect elasticity and hysteresis loss.
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Precautions for using ICI pilling and pilling instrument
The ICI pilling tester is suitable for detecting the pilling phenomenon caused by friction on the fabric surface without pressure, and is suitable for woven and knitted fabrics.
Meet the standards:
ASTM D3939, GB/T 11047, JIS L1058
Scope of application:
The ICI hammer-type snagging tester can quickly detect the ease of fabric snagging (that is, the yarn is hooked out of the fabric) under normal wearing conditions.
Product introduction:
This instrument is equipped with an observation box and comparison pattern cards of different fabric structures. Equipped with 4 test rollers (covered with the fabric to be tested), the hammer ball is a tungsten carbide head and is controlled by a predetermined electronic counter.
Instrument description:
This tester is suitable for testing knitted and woven outerwear fabrics and other fabrics that are prone to snagging. It is especially suitable for testing the snagging performance of chemical fiber filaments and their deformed yarn fabrics.
Precautions for using ICI Pilling Tester:
1. The voltage should be maintained stable during use to avoid burning out the power supply.
2. Clean the cork liner regularly with a suitable cleaning solvent, such as industrial methylated spirit or trichloroethane.
3. When replacing the experimental tube, the new experimental tube must be inspected before use.
4. Regularly check whether the control panel buttons and screws in various parts are normal.
5. Clean the instrument before and after each experiment to ensure that all lint and debris are removed from the box.
6. The reference fabric should be retested every six months and compared with the original test specimen.
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Parameters and test methods of digital fabric bursting strength machine
This machine can be used to test the bursting strength and height of woven, knitted, non-woven fabrics, paper or sheets. The instrument uses hydraulic blasting to act on a specific area of rubber film, and then acts on the sample to force the fabric to burst.
Principle: A digital burst strength tester can detect the burst strength of knitted fabrics, apply oil pressure to a rubber membrane in a specific area, and then force the fabric to burst. This instrument is equipped with a pressure display, peak hold record and peak upper limit setting, replaceable rubber diaphragm, and manual clamping device.
Comply with standards: ISO 13938-1/3689/3303/2758, ERT 80-4-20, ASTM D3786 BS 3137/3424(PT6)/4768, GB/T 7742.1
Features:
①.Full test area support, suitable for different standard requirements, in line with the GB standard with a maximum test area of 100cm2; ②. Support PC-side online communication, statistical analysis of results, and test reports can be printed; ③. Pneumatic clamps, the clamping force is firm and even , can be applied to clamping various materials in an all-round way; ④. The test results are richly expressed and can display such as: bursting strength, bursting strength, diaphragm pressure, bursting height, bursting time; convenient for quality control personnel to fully understand bursting performance of the sample.
Test steps: Place all samples under the standard atmospheric conditions required by the standard to adjust humidity and balance, and prepare test samples of the required size.
①. Manual test:
1. Installation of test sample. Place the humidity-adjusted sample into the middle and lower part of the clamp, and tighten the sample along the plane to avoid wrinkles. Place the test cup above the test sample
2. Rotate the handwheel clockwise at a speed of 120 rpm until the sample breaks. Stop rotating the handwheel at the moment the sample breaks. After the sample breaks, quickly loosen the clamp ring on the sample. Rotate the hand lever counterclockwise to the starting point to relax the film. Record the pressure required to expand the film and record the total pressure required for the sample to break. . NOTE If the dial shows that the pressure has stopped rising but the sample has not ruptured, push the lever to remove the pressure. Record the elongation of the sample beyond the measuring limit of the testing machine.
② Automatic test:
Place the humidity-adjusted sample into the middle and lower part of the clamp, and tighten the sample along the plane to avoid wrinkles. Place the test cup above the test sample and move the operating handle to the left to expand the film. While the membrane expands, hold the latch on the lower or right side of the operating lever. When the sample breaks, try to rotate the latch so that the operating lever returns to the middle position. Record the total pressure required to rupture the sample. After the sample breaks, quickly loosen the clamp ring on the sample, swing the latch to its normal position, remove the pressure on the membrane, push the operating lever to the right, and record the pressure required to expand the membrane.
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Technology empowers cleaning：escort for health and safety
In the rapidly changing modern society, cleaning has gone beyond the traditional daily maintenance scope and has become a key factor in ensuring health and safety. At TVX Cleaning, we use cutting-edge technology to provide excellent cleaning solutions to create a safer and healthier living and working environment for customers.
Technology blessing: the inevitable choice for the new era of cleaning
Today's world faces challenges such as virus transmission, increased allergens and environmental pollution, and traditional cleaning methods are often difficult to cope with. The integration of technology has changed the way of cleaning and brought us the following advantages:
Precise and no omissions: high-tech tools can deeply clean areas that are difficult to reach manually.
Efficient and time-saving: automated and intelligent cleaning equipment shortens cleaning time while improving results.
Environmentally friendly and safe: non-toxic and sustainable cleaning products protect user health and reduce the impact on the earth.
TVX's technological cleaning method
TVX Cleaning is committed to combining innovative technology with professional services to redefine cleaning standards. The following are our main technical solutions:
1. Artificial intelligence cleaning robot
The robot is equipped with intelligent sensors and mapping functions, which can navigate autonomously and clean accurately, thereby reducing human intervention and improving work efficiency.
2. IoT monitoring technology
Smart sensors monitor the cleaning status in real time, mark key areas, and optimize cleaning plans to ensure efficient use of resources.
3. Environmentally friendly cleaning solutions
We use biodegradable and non-toxic cleaning products that can kill viruses and protect the environment, achieving a win-win situation.
Significant benefits to health and safety
· Reduce virus transmission
Our technology solutions can kill 99.9% of germs and viruses, greatly reducing the risk of disease transmission.
· Improve air quality
Through high-efficiency filtration systems and environmentally friendly products, we create a healthier indoor environment and reduce allergens and pollutants.
· Comply with industry standards
We always follow the health and safety standards of the cleaning industry to help customers meet regulatory requirements.
Looking to the future: Create new heights of cleaning with TVX
Technological advances continue to drive changes in the cleaning industry. At TVX Cleaning, we are committed to introducing the latest technologies, from artificial intelligence to green technology, to continuously optimize services. The future of cleaning will not only be efficient, but also more environmentally friendly and intelligent.
Conclusion
Health and safety are never options that can be compromised. With TVX Cleaning's technology-enabled solutions, you can ensure that the cleaning area is both safe and healthy. Contact us now to learn how to change the way you clean and experience the difference enabled by technology!
2024 Annual Meeting of the Academic Committee of Building Electrical and Intelligent Buildings of Wuxi Civil Engineering Society
On November 30th, 2024, the Academic Committee of Building Electrical and Intelligent Building of Wuxi Civil Engineering Society was held in Wuxi Picturesque Hotel, representatives from more than 20 electrical equipment manufacturers attended the annual meeting.
Anhui Jinli Electric is a technical service company specializing in the research and development, manufacturing, sales and overall lightning protection solutions of lightning protection products, and had a good interaction with the visiting representatives at the venue. The exhibits included sugre protection devices, SPD backup protectors, backup integrated SPDs, signal surge protectors and intelligent lightning protection system, which attracted the attention and consultation of many representatives. As a professional lightning protection manufacturer, our company was also invited to make a company introduction at the conference.
With the approval of the Wuxi Civil Engineering Society and the Building Electrical and Intelligent Building Professional Academic Committee, Anhui Jinli officially became a member unit of the Wuxi Civil Engineering Society and the Building Electrical and Intelligent Building Professional Academic Committee.
Based on the corporate development philosophy of "protecting users from lightning", we are committed to the safety of electricity use in electrical systems, focusing on lightning protection technology for electrical systems, and independently developing lightning warning systems and intelligent lightning protection systems. We transform passive lightning protection into active protection, and decentralized protection into full-system intelligent protection, and establish a three-dimensional lightning protection and operation and maintenance management system. Creating the world's best lightning protection brand is our driving force for continuous progress, and we provide global customers with safer and more efficient lightning protection solutions.
Considerations for Using Low Voltage Surge Protection Devices in Photovoltaic Systems
As photovoltaic (PV) systems become more widespread, ensuring their safety and reliability is essential, especially in preventing lightning and surge interference. Low Voltage Surge Protection Device (SPD) play a critical role in PV systems by reducing the risk of equipment damage. Here are some important considerations for applying SPD in PV systems.
Ⅰ. Selection of SPD
PV systems have relatively high DC voltages, so it’s essential to choose SPD that match the system’s voltage level. Ensure that the Voltage Protection Rating (VPR) of the SPD meets the safety requirements of the equipment. Pay special attention to the differences between DC and AC SPD.
Ⅱ. Installation Location of SPD
The installation location of the SPD is crucial; it should be as close as possible to key equipment like inverters and controllers. Additionally, SPD need to be installed at the equipment input to ensure that surges are suppressed before reaching the devices.
The proper design and installation of the grounding system in a PV system contribute to the effective performance of the SPD. It’s recommended to use a low-impedance grounding system to ensure that surge currents can be quickly dissipated, reducing the impact on the system.
Ⅳ. Regular Maintenance and Inspection
To maintain the effectiveness of SPD, regular inspections and maintenance are necessary. After stormy seasons, promptly replace any aged or failed SPDs to ensure the safe operation of the PV system.
With proper surge protector selection, installation, and maintenance, the surge resistance of PV systems can be significantly enhanced, extending their lifespan and ensuring stable operation.
Pursuing excellence and striving for "gold" to ensure quality - Jinli's first skills competition
In this season full of vitality and innovation, we welcome the first Jinli Lightning Protection Production Skills Competition whichaims to stimulate employees' enthusiasm for learning professional skills through a series of carefully designed competition projects, promote the collaboration ability and technical level among teams, and also build a good platform for knowledge exchange and technology sharing within the company.
This competition has five projects, covering multiple key links from varistor assembly to manual circuit board insertion, the process for producing surge protection device, including https://www.jinlispd.com/ac spd, dc spd, pcb spd etc.
The competition attracted 145 participants from different departments. They not only demonstrated their own methods and skills, but also promoted knowledge exchange and technology sharing within the company through cross-departmental communication and collaboration. In the intense and orderly competition, the contestants showed a strong sense of responsibility and high technical level, which fully demonstrated Jinli Lightning Protection's pursuit of excellence and strong corporate culture to ensure quality.
Through this skills competition, we have seen the efforts and dedication of each participant, and also witnessed their breakthroughs in skills and efficiency. This is not only a display of personal ability, but also a reflection of teamwork spirit.
Antenna Load Accessing for Angle Steel Telecom Tower
When designing an angle steel tower to support antennas, it is essential to consider the antenna load along with other factors to ensure the structural integrity and stability of the tower. Here are key considerations for determining and accommodating antenna loads on angle steel towers:
1. Antenna Types and Characteristics:
- Antenna Weight: Determine the weight of the antennas and associated equipment that will be mounted on the tower.
- Antenna Dimensions: Consider the physical dimensions and size of the antennas to assess the space required for installation on the tower.
2. Wind Load from Antennas:
-Wind Exposure: Calculate wind loads acting on the antennas based on their exposed surface area and orientation to prevailing wind directions.
- Wind Pressure Coefficients: Use appropriate pressure coefficients to estimate wind forces on the antennas and their supporting structures.
3. Ice and Snow Load Considerations:
- Ice Accumulation: Account for potential ice accumulation on antennas, which can significantly increase the load on the tower during winter conditions.
- Snow Load: Consider the additional weight of snow on antennas in regions prone to heavy snowfall.
4. Mounting and Support Structures:
- Mounting Arrangement: Design secure and suitable mounting brackets or structures to support the antennas on the tower.
- Distribution of Loads: Ensure that the load distribution from the antennas to the tower is uniform to prevent localized stress concentrations.
5. Structural Analysis and Capacity:
- Tower Capacity: Evaluate the tower's load-carrying capacity and structural strength to accommodate the combined loads from antennas, equipment, and environmental factors.
- Load Paths: Ensure that the load paths from the antennas to the tower's foundation are well-defined and capable of transferring loads effectively.
6. Dynamic Effects and Vibration Control:
- Dynamic Analysis: Consider dynamic effects such as wind-induced vibrations and resonance that can affect the stability of the tower under antenna loads.
- Vibration Dampers: Implement vibration control measures, such as dampers or tuned mass dampers, to mitigate oscillations caused by antenna-induced vibrations.
7. Code Compliance and Safety Factors:
- Regulatory Standards: Ensure compliance with industry standards, building codes, and regulations pertaining to antenna loads and tower design.
- Safety Factors: Apply appropriate safety factors to account for uncertainties in load calculations and to ensure the tower's safety under varying operational conditions.
By carefully assessing the antenna loads, considering environmental factors, conducting structural analyses, and adhering to industry standards, engineers can design angle steel towers that effectively support antennas while maintaining structural stability and safety. Proper planning and consideration of antenna loads are essential to ensure the longevity and reliability of the tower in service.
Learn more at www.alttower.com
