Frequently Questions about the Construction of Lightning Protection Projects

Lightning protection projects and facilities must be installed inside and outside the building to prevent lightning intrusion. However, problems of varying degrees will occur during the actual construction process, including the following situations;
1. Construction not according to drawings
According to regulations, during the construction of buildings, construction should be carried out in strict accordance with the construction drawings that have passed technical review. It is not allowed to add or delete items at will, cut corners, etc. However, during the inspection of the lightning protection device  construction site, it was found that some projects were not carried out according to the design drawings. During construction, the distance between the down conductors set exceeds the design range, and the down conductors are not set at the corners of the building.
2. Irregular welding of lightning protection device
Lightning protection grounding welding of buildings always accompanies the whole process of construction. The quality of welding directly determines the quality of lightning protection projects. In building design, basic steel mesh is often used as the grounding body. In actual inspection, problems existing in it are: Welding, the welding between the main steel bars of the down conductor and the grounding body, and the welding between the main bars of the ground beam, the overlap length often does not meet the specified standards; the specifications of the lap steel bars do not meet the requirements.
3. No reserved points for equipotential connection
The lightning protection effect of a building mainly depends on whether the equipotential connections formed between the non-charged metal objects and the charged metal objects in the building can become a unified whole. Therefore, during the construction process of the building, the equipotential reserve end should be set with enough points at necessary locations as reserves.
4. Failure to install surge protector as required

The settings of surge protectors, low-voltage power distribution grounding forms, shielding measures, installation techniques, and pipeline laying are inconsistent with the standard requirements for lightning protection design. The low-voltage power distribution system introduced into the building should be installed with corresponding surge protectors and floor lighting systems (electrical equipment). Surge protectors should be installed in the power control cabinet. Cable TV, broadband network, and telephone lines in buildings should be equipped with signal arresters when entering the building.

Lightning protection construction pictures

 

Jinli  is a company integrating R&D, production, and sales. Since its establishment in 2006, it has 18 years of experience in producing surge protectors. The lightning protection department consists of a technical department and a construction department. Among them, there are 10 technicians and 20 construction workers. The construction personnel have been selected and trained at all levels and operate in strict accordance with the construction requirements to avoid appeal issues.

Why are large and medium-sized air separation equipment suitable for using full low-pressure processes?

Reducing the working pressure of the air separation equipment can reduce the unit energy consumption of the product. The working pressure of the full low-pressure air separation equipment is close to the working pressure of the lower tower, while the working pressure of the small air separation equipment is much higher than the pressure of the lower tower. The working pressure is low, and the unit cooling capacity generated by expansion is also small. In order to maintain the balance of cooling capacity, it is first required that the unit cooling loss is also small. For large-scale air separation equipment, the unit cooling loss decreases as the unit capacity increases. At the same time, a smaller hot end temperature difference is also selected during design. The unit cooling loss due to incomplete heat exchange is relatively small, which is a good way to reduce the working pressure. Favorable conditions were created.

 

In addition, the low working pressure requires the expander to have high efficiency so that it can produce a larger cooling capacity under the same pressure difference. As the capacity of the turboexpander increases, the optimal rotation speed decreases and the efficiency increases. Therefore, it is most suitable for large-scale air separation equipment, making it possible to reduce working pressure.

 

For small air separation equipment, the cooling loss is relatively large. Even if a turbine expander is used, the speed is as high as 105r/min or more, the efficiency is low, and the maintenance and management requirements are very high. In addition, for large-scale air separation equipment, the amount of expansion is small relative to the amount of process air. The expanded and refrigerated air can still participate in distillation and extract oxygen from it. If a small air separation equipment adopts a low-pressure process, because the amount of expansion gas required to generate refrigeration capacity is large and cannot be fully involved in the distillation, the oxygen extraction rate will be very low, and the energy consumption per unit product will still be high. Therefore, the full low-pressure process is most suitable for large and medium-sized air separation plants.

 

At present, with the adoption of molecular sieve adsorption purification and booster turbine processes, as well as the advancement of plate-fin heat exchanger technology, the minimum capacity of low-pressure air separation equipment has been designed to 340m3/h oxygen production and 800m3/h nitrogen production (KDON -340/800), the exhaust pressure of the air compressor is 0.59MPa.

 

air seperation equipmentair seperation plant

 

What is the pressure swing adsorption molecular sieve purification process?

What is the pressure swing adsorption molecular sieve purification process, and what are its characteristics compared with the temperature swing adsorption purification process?

Molecular sieves have the function of selective adsorption of mixed gases, and their adsorption capacity changes with changes in temperature and pressure. Its adsorption capacity increases at low temperature and high pressure, and decreases at high temperature and low pressure. Temperature swing adsorption (TSA) is based on the principle that molecular sieves adsorb at room temperature and desorb at high temperatures, while pressure swing adsorption (PSA) is based on the principle that molecular sieves adsorb at high pressure and desorb at low pressure.

The so-called pressure swing adsorption molecular sieve purification process is to use the molecular sieve pressure swing adsorption process to remove water, carbon dioxide, and hydrocarbons in the air, eliminating the need for air pre-cooling systems and regeneration heaters, as shown in Figure 15.

Use 1% to 1.5% purified air to regenerate molecular sieves. The general switching cycle is 9 to 14 minutes. There are 2 to 6 adsorbers according to the specifications of the air separation unit. The adsorbent capacity is 4 times that of the TSA adsorbent of similar air separation units. Each adsorbent is The container is equipped with 6 switching valves.

Compared with TSA, the advantages of PSA are:

     1) Simplify the process and eliminate the need for equipment such as air cooling towers, evaporative cooling towers, low-temperature water pumps, and regenerative heaters;

     2) There is no steam consumption required for TSA heating regeneration. For a 60,000m3/h air separation unit, 1,800kg/h of steam (approximately 1,000kW·h/h) can be saved.

Its disadvantages are:

     1) Air switching loss is 1% to 1.5% and consumes 400kW more power;

     2) The switching cycle is short and the switching valve is prone to failure;

     3) It is difficult to completely desorb the regenerated molecular sieve at room temperature, which will affect the adsorption performance of the molecular sieve and bring some harmful gases into the air separation unit, which will have a certain impact on the safety of large-scale air separation units;

     4) The investment is slightly larger.

PSA oxygen generatorPSA nitrogen generator

 

Which Crops Were First Cultivated By The Chinese?

What is a crop? Which crops were first cultivated by the Chinese?

 

In daily life, rice, soybean, wheat and corn are all major crops in my country. They are essential foods in our daily diet and play an important role in our daily life. So does anyone know which rice, wheat, corn, and soybean are the earliest cultivated by the Chinese?

 

 

Rice: It is one of the staple foods for half of the world's population at present. In addition to the daily consumption of rice, it can also be used for brewing and sugar making as industrial raw materials. Rice husks and rice straws can be used as livestock feed.

 

Corn: native to Central and South America, my country's main producing areas are in the northeast, north and southwest mountainous areas.

Soybeans: most commonly used to make various soy products, extract soybean oil, brew soy sauce and extract protein. Soybean has been cultivated in China for 5,000 years and is one of the important food crops.

 

Wheat: It belongs to the grass family, and the Mesopotamia is the first area in the world where wheat was grown.

 

Among rice, wheat, corn, and soybeans, rice is the earliest cultivated by the Chinese. Rice has appeared in the Yangtze River Basin of China as early as 7,000 years ago.

 

Crops are green plants cultivated by human beings called crops, while crops cultivated in larger areas are called crops. At present, there are about 1,500 species of plants cultivated by humans, which can be roughly divided into three categories: crops, horticultural crops and forest trees.

 

The basis and method of crop classification:

 

1. Classification according to the physiological and ecological characteristics of crops

 

1. According to the requirements of crops for temperature conditions

 

Temperature-loving crops: The temperature and accumulated temperature required in the whole growth period are high, and the minimum temperature for growth and development is 10 °C, such as rice, corn, cotton, sorghum, millet, peanut, tobacco, sugarcane, sesame, jute, kenaf Wait;

 

Cold-resistant crops: The temperature and accumulated temperature required for the whole growth period are relatively low, and the minimum temperature for their growth and development is about 1-5 °C, such as wheat, barley, rye, oats, rape, broad beans, and glutinous seeds.

 

 

 

2. According to the response of crops to photoperiod

 

Long-day crops: crops that are suitable for growth and development under long-light conditions and can promote development by extending the light are called long-day crops, such as wheat, barley, rye, rape, etc.

 

Short-day crops: crops that are suitable for growth and development under long-dark conditions and can promote development by extending the dark time are called short-day crops, such as rice, corn, cotton, sorghum, peanut, soybean, tobacco, jute, raw hemp Wait.

 

Neutral crops: There are no strict requirements on the length of light, such as peas, buckwheat, etc., which are called neutral crops.

 

Fixed-day crops: The length of sunshine needs to be controlled within a certain period of time to complete its growth cycle. For example, some varieties of sugarcane can only bloom under the conditions of 12 hours and 45 minutes of sunshine length.

 

 

 

3. According to the characteristics of crops' carbon dioxide assimilation pathway

 

Three-carbon (C3) crops: The carbon dioxide compensation point of photosynthesis is high, and there is strong photorespiration, such as rice, wheat, cotton, soybean, and tobacco.

 

Four-carbon (C4) crops: The carbon dioxide compensation point of photosynthesis is low, and the photosynthetic intensity is higher than that of three-carbon crops under high temperature and strong light, such as corn, sorghum, sugarcane, etc.

 

Crassulaceae (CAM) crops: stomata open at night, absorb carbon dioxide, and store it in the plant. During the day, the pores are closed, and the carbon dioxide in the plant is used for photosynthesis. Its plants include sedum, sisal, pineapple, orchid, etc.

 

2. Classification according to the characteristics of agricultural production

 

1. The sowing period is divided: spring crops, summer crops, autumn crops, winter crops;

2. Classification of sowing density: densely planted crops and row crops;

3. Harvest season division: summer crops, autumn crops;

4. Stem height division: tall crops, dwarf crops, creeping crops

5. Classification of root growth characteristics: tap root crops, fibrous root crops, and root crops

 

3. According to the combination of use and botanical system

 

1. Food crops

 

Cereals: barley, wheat, rice, corn, sorghum, millet, chestnut

Legume crops: soybean, mung bean, pea, broad bean

Potato crops: sweet potato, potato, taro

 

 

2. Cash crops

 

Fiber crops: cotton, kenaf, ramie

Oil crops: rape, peanut, sunflower, sesame

Sugar crops: sugar cane, sugar beet

Favorite crops: tobacco, coffee, tea

 

3. Feed and green manure crops

 

Legumes: Aozi, Alfalfa, Vetch, etc.;

Poaceae: Sudan grass, ryegrass, brome grass, etc.,

Others: red weed, water hyacinth, water lotus, water peanut, etc.

 

4. Special crops

 

The main ones are: reed, mat grass, mint, spearmint, mulberry, rubber, pepper, star anise, cinnamon, etc.

 

 

Key words: eavisionag agro drone sprayer, crop spraying drone price, drone in agriculture spraying

 

XP600 vs DX5 printhead, Which one is your favorite?

In recent years, with the emergence of XP600 print head, DX5 print head has gradually withdrawn from the market. XP600 has been rejected and misunderstood since it appeared, and is now slowly being accepted. Why?

 

Everyone knows that XP600 is actually used to replace DX5, so in the design of xp600, there are many similarities with DX5.

 

1. The printing effect is very similar between the two above, and the naked eye can hardly tell the difference.

 

2. Above the printing speed, the printing speed of xp600 is slightly slower than that of dx5, but there is no big difference.

 

3. In terms of service life, DX5 is generally about 1 year, and xp600 is generally 8 months. There are also some people who replace the print head for about 3 months. This is mainly about how to use and maintain the print head.

 

4. In terms of price, the price of DX5 is 5-6 times that of XP600, that is, you can buy 5-6 pcs of sinodigitech XP600 print heads if you buy one DX5 print head. The price difference is clear at a glance.

 

5. XP600 Eco solvent printing machine are also cheaper than DX5 Eco solvent printing machine, and the various configurations are different, and the prices are also different.

 

Many people will buy products that suit them based on the price/performance ratio. XP600 is undoubtedly their best choice. Coupled with the continuous increase in the price of dx5, many people will choose XP600.

 

There are certain requirements for the quality and price of flex printing machine in India market, and high-quality and low-cost products are the most needed in each market. Let’s take a look at the views of our Indian customers.

 

Recently, we received feedback from our customers in India and sent us videos and pictures to express their recognition of our machines.

 

 

xp600 printer installation done in india

 

 

Which is the best vision counting machine manufacturer?

 

Automatic vision counting machine can free counting and batch counting for many kind of material.

 

There are many kinds of vision counting machine manufacturers in the market, good and bad are mixed, what problems should be paid attention to when choosing a counting machine brand and manufacturer?The editor made a summary, hoping to help everyone.

 

1. Confirm the counting machine principle
Counting machine has many different counting principles, such as weighing counting, photoelectric counting and vision counting. Vision counting has the highest accuracy, using camera recognition counting.

vision counting machine


2. Confirm whether the manufacturer has its own core technology
Vision counting machine is largely a customized product, which needs to do some analysis of the physical characteristics of each material, including viscosity, elasticity, dispersion state and so on. The equipment does customized processing, so that the counting accuracy of the product can reach the highest. In addition, some special production requirements, such as the acquisition of label information, ERP connection and other customized software processing. Vision counting machine is the combination of hardware and mechanical structure to make the whole set of equipment to achieve good results.Some manufacturers purchase other systems integrated into their own mechanical structure, this grafting development mode is often difficult to achieve a very good counting effect. To sum up, the good vision counting machine manufacturers have their own hardware and software development team, mechanical structure development team and professional after-sales team.

 

3. Understand the customer cases that manufacturers have cooperated with
The customer cases that the manufacturer has cooperated with reflect the experience and strength of the manufacturer, especially the cooperation with some well-known companies, which also reflects the level of after-sales service.

wire terminal vision counting and packaging machine

 

4. The product needs to be tested by the counter
Materials need to be tested on the machine, and accurate counting accuracy and speed can be obtained through continuous testing.

 

The core competitiveness of vision counting machine manufacturers

The core competitiveness of vision counting machine manufacturers

How to better provide better service for the majority of customers who need vision counting machine solutions, that is to improve their own technical level. Since its establishment, our company has focused on the development of vision counting machines to solve the counting needs of all walks of life.

small parts counting machine

In order to comply with all walks of life in the market, as well as more and more complex counting needs, our company pays attention to the introduction of talent, constantly promotes technological innovation, dares to be the first, develops a variety of vision counting technology, and solves various counting problems. For example, counting of oily materials, snack food counting, laundry pods counting, damage prevention counting equipment, small material counting, detection & counting two-in-one equipment and so on.

Recently, our company is very honored to obtain the "Hefei Big Data Enterprise Certificate" issued by the Hefei Data Resources Bureau, at the same time, and obtained two new invention patents, namely, "a viscous material feeding and conveying device" and "an efficient counting subcontracting device for granular viscous materials". At this point, our company has obtained a total of more than 20 invention patents, utility model patents and appearance patents in the vision counting machine industry, and a total of about 30 computer software works. Our company has also won the title of Hefei High-tech Zone Eagle and deep technology enterprise for many years.

vision counting machine

As a senior vision counting machine manufacturer with rich experience in the industry, our company constantly improves its core competitiveness, and constantly actively seek a breakthrough in counting solutions, serves more enterprises, and makes progress with more enterprises.

 

A Comparison and Contrast of Different Products or Services in the [Keyword] Industry

In the evolving world of [Keyword] products and services, consumers have an array of options to choose from. In this article, we will compare and contrast various offerings in the market, providing a comprehensive analysis to help you make an informed decision. Whether you’re a new buyer or looking to switch, this neutral review will shed light on different aspects, ensuring you find the perfect fit.

Product/Service A

Product/Service A boasts an impressive set of features and functionalities. With its user-friendly interface and seamless integration, it provides a smooth user experience. However, it may come with a higher price tag and limited customization options. This solution appeals to those seeking a quick and convenient option without the need for extensive personalization.

Product/Service B

On the other hand, Product/Service B positions itself as a high-end alternative, catering to customers with specific requirements. It offers advanced customization options, allowing you to personalize every aspect according to your unique needs. This level of flexibility comes at a higher cost, making it an excellent fit for individuals or businesses with more complex demands.

Product/Service C

Product/Service C presents a cost-effective solution for budget-conscious consumers. While it may not offer the same extensive feature set as its counterparts, it provides excellent value for money. With its simplified interface, this product/service focuses on delivering the essentials, ensuring a streamlined experience. It targets those who prioritize affordability without compromising on functionality.

Product/Service D

If innovation and cutting-edge technology are your top priorities, then Product/Service D might catch your interest. This industry disruptor leverages the latest advancements to deliver a seamless and futuristic experience. While it may be relatively new in the market, its unique offerings and game-changing approach appeal to early adopters seeking something fresh and innovative.

Conclusion

Each product or service in the [Keyword] industry has its strengths and weaknesses. Product/Service A provides quick and convenient solutions, whereas Product/Service B offers extensive customization options for personalized experiences. Product/Service C presents excellent value for money, and Product/Service D brings innovation to the forefront. Consider your specific needs, priorities, and budget when making a decision.

Remember, the right choice ultimately depends on what aligns best with your requirements. Take your time to evaluate each option carefully. Regardless of which product or service you choose, rest assured that the [Keyword] industry has a solution tailored just for you.

Tips and Tricks for Maximizing the Performance of Your 1.0T-2.0T Power Electric Pallet Stacker CDD20

If you’re an Electric Pallet Stacker enthusiast, you understand the importance of optimizing the performance of your equipment to ensure smooth and efficient operations. The 1.0T-2.0T Power Electric Pallet Stacker CDD20 is a powerful tool that can make your material handling tasks a breeze. To help you get the most out of your electric pallet stacker, we’ve curated a list of valuable tips and tricks. Whether you’re a seasoned operator or a novice, these insights will enhance your productivity and extend the lifespan of your equipment.

1. Prioritize Regular Maintenance and Inspections

To keep your 1.0T-2.0T Power Electric Pallet Stacker CDD20 running at its best, establish a routine maintenance schedule. This includes checking and replenishing the fluids, inspecting the tires for wear and tear, and ensuring the battery is charged and functioning optimally. Regular inspections not only prevent unexpected downtime but also help identify potential issues before they escalate.

2. Train Your Operators

Proper training is essential for safe and effective operation of the electric pallet stacker. Make sure your operators are well-trained on the specific model they will be using. They should understand the controls, load capacity, and safety features of the 1.0T-2.0T Power Electric Pallet Stacker CDD20. Emphasize the importance of following operational guidelines and best practices to minimize accidents and equipment damage.

3. Optimize Battery Performance

The performance of an electric pallet stacker is highly dependent on its battery. To maximize battery life and efficiency:

  • Charge the battery fully before each use.

  • Avoid deep discharges; recharge the battery whenever it reaches 30-40% capacity.

  • Store the battery in a cool and dry location when not in use.

  • Clean the battery terminals regularly to ensure proper electrical connections.

4. Mind the Load Capacity

Exceeding the recommended load capacity can lead to safety hazards and potential damage to your electric pallet stacker. Familiarize yourself with the load limits of the 1.0T-2.0T Power Electric Pallet Stacker CDD20 and never exceed them. If you frequently handle heavy loads, consider upgrading to a higher capacity model to ensure optimal performance and longevity.

5. Practice Smooth and Controlled Operation

Operating the electric pallet stacker smoothly and with precision not only improves efficiency but also reduces wear and tear on the equipment. Avoid abrupt starts and stops, and be gentle when maneuvering around corners or obstacles. Maintaining a consistent speed and using the controls with finesse will prolong the lifespan of your electric pallet stacker.

In conclusion, by following these tips and tricks, you can enhance the performance and extend the lifespan of your 1.0T-2.0T Power Electric Pallet Stacker CDD20. Prioritize regular maintenance, provide thorough operator training, optimize battery performance, adhere to load limits, and practice smooth operation. With these insights, you’ll be well on your way to achieving greater productivity and efficiency in your material handling operations.

Introducing the 1.5 Ton Electric Pallet Stacker A Game-Changer for Warehousing Efficiency?

Are you tired of the manual labor involved in moving heavy pallets around your warehouse? Do you wish there was a more efficient and ergonomic solution? Look no further than the 1.5 Ton Electric Pallet Stacker! This innovative piece of equipment is revolutionizing the way warehouses handle and stack pallets, making operations smoother, faster, and more cost-effective. In this article, we will explore the features, benefits, and potential challenges of using an electric pallet stacker with a 1.5-ton capacity.

What is an Electric Pallet Stacker?

An electric pallet stacker is a powerful handling device designed to lift and transport pallets effortlessly. Unlike traditional forklifts, which require a skilled operator, a pallet stacker is user-friendly and can be operated with minimal training. It helps streamline operations, reduce manual labor, and enhance safety in the workplace.

The Power of 1.5 Tons

The 1.5-ton capacity of our electric pallet stacker makes it a versatile choice for handling a wide range of loads. Whether you are moving heavy-duty materials, machinery, or multiple pallets at once, this equipment is up to the task. Its sturdy construction ensures durability and long-lasting performance, even in demanding environments.

Benefits of the Electric Pallet Stacker

  1. Improved Efficiency: With the electric pallet stacker, you can save time and effort, as it eliminates the manual effort required to lift and carry heavy loads. This means your warehouse team can complete tasks faster, increasing overall productivity.

  2. Enhanced Safety: Manual handling of heavy loads can lead to injuries and accidents. The electric pallet stacker minimizes these risks by providing a controlled lifting and transport mechanism. It also reduces the chances of product damage, resulting in cost savings.

  3. Ergonomic Design: The design of the electric pallet stacker prioritizes operator comfort and ergonomics. It features adjustable controls, comfortable seating, and intuitive handling, reducing fatigue and improving worker satisfaction.

Potential Challenges to Consider

While the benefits of using an electric pallet stacker are evident, it is crucial to consider potential challenges associated with this equipment. These include:

  1. Initial Investment: Acquiring an electric pallet stacker does require an upfront investment. However, when considering the long-term benefits and cost savings in labor and productivity, the return on investment can be substantial.

  2. Charging and Maintenance: Electric pallet stackers require regular charging and maintenance to ensure optimal performance. Planning for charging infrastructure and establishing maintenance protocols are necessary steps to keep your operations running smoothly.

Conclusion

The introduction of the 1.5 Ton Electric Pallet Stacker brings efficiency, safety, and convenience to warehouse operations. With its ability to handle heavy loads and ergonomic design, this equipment is a game-changer for businesses seeking to improve productivity and enhance workplace safety. While initial investments and maintenance considerations are important, the long-term benefits make the electric pallet stacker a smart choice for any warehouse. Upgrade your handling equipment today and experience the difference in efficiency and ease.