搜索
Search

CN

Advantages of flat welding flange

  • Time of issue:2021-08-13

Advantages of flat welding flange

(Summary description)　　1. In order to compact the sealing surface of the flat welding flange, only a small ☆pressure is required. As the required pressure drops, the size of the bolts and the number requαired are correspondingly reduced. After all, a plan is planned. A flat welding flange product  with a relatively small volume and a relatively light weight.

　　 2. The production of flat welded flanges can save data and reduce costs. When the raw ma≈terial of the pipe is special and the price is high, the cost of weldinσg the flange of the same raw material will be high, and the use of this fla↔nge can effectively save the cost of materials. Conducive to construction, •when connecting, the bolt holes of the flange are inconvenient to align or  to avoid replacing the flange bolt holes of the equipment, etc., the use of this flat  welded flange is very suitable.

        3. The flat welding flange can save space and reduce weight in ≥the process of use. The most important thing is to ensure that ≥the head part will not leak. It has a very outstanding sealing function. The reason why t<he size of the compact flange is reduced is because The diameter of the se≠al is reduced, which will reduce the cross-section of the sealing surface. Also, the f↔lange gasket has now been replaced by a sealing ring to ensureα an outstanding matching of the flat welded flange seal facing ★the sealing surface.

　　 flat welding flange

　　 But it also has some disadvantages:

　　 Disadvantages of flat welding flange:

　　The main design disadvantage of flat welded flanges is that® it cannot ensure no leakage. This is the lack of its planning: the connection εis dynamic, and for example, thermal expansion and fluctuatingδ cyclic loads will cause movement between the flange surfaces, which will affect γthe function of the flange, which will damage the integrity of ≥the flange and eventually lead to leakage. It is imp¶ossible for any product to be without shortcomings, just try to c★ontrol the lack of products to the minimum, so the company tries to perfect the functions of th☆e products when producing flat welded flanges to make them pla y the greatest role.

  • Time of issue:2021-08-13
  • Views:
Information

　　1. In order to compact the sealing surface of the flat welding© flange, only a small pressure is required. As the required pressure drops, the size of the• bolts and the number required are correspondingly reduc ed. After all, a plan is planned. A flat welding flange product with a relatively small ≤volume and a relatively light weight.

　　 2. The production of flat welded flanges can save data and reduce costs. When ≠the raw material of the pipe is special and the price is high, the cost of 'welding the flange of the same raw material will be high, and the use of this flange can effec↑tively save the cost of materials. Conducive to construction, wh≤en connecting, the bolt holes of the flange are inconvenient to align or to avoid replacing th"e flange bolt holes of the equipment, etc., the use of this flat welded flange is very ♥suitable.

        3. The flat welding flange can save space and reduc¥e weight in the process of use. The most important thing is to ensuλre that the head part will not leak. It has a very outstanding seal↓ing function. The reason why the size of the compact flange is reduced is because The diam eter of the seal is reduced, which will reduce the cross-section of tφhe sealing surface. Also, the flange gasket has now been replaced by ¥a sealing ring to ensure an outstanding matching of the flat weld↕ed flange seal facing the sealing surface.

　　 flat welding flange

　　 But it also has some disadvantages:

　　 Disadvantages of flat welding flange:

　　The main design disadvantage of flat welded flanges is that it cannot ens&ure no leakage. This is the lack of its planning: the connection is dynamic, and for exa₽mple, thermal expansion and fluctuating cyclic loads will cause movement between the flange₩ surfaces, which will affect the function of the flange, which will damage the integrity of> the flange and eventually lead to leakage. It is impossible for any product to ✘be without shortcomings, just try to control the lack of≠ products to the minimum, so the company tries to perfect the functions of the products when© producing flat welded flanges to make them play the greatest role.

Keyword:

Previous: Talking about the welding technology of neck flange
Next: The principle and characteristics of the use of flanges

relevant information

　　 The neck height of the neck flange is low, which can improve "the rigidity and load-bearing capacity of the flange. Compared with the butt-welded flange, the® welding workload is large, the electrode consumption is high, and it cannot withstand high tem♦perature and high pressure, repeated bending and temperature flu∑ctuations, but the on-site device is more convenient, and the process of •welding seam scratching can be omitted, which is more popular. Butt welding flange with neck: neδck flange welding is usually called "high hub" flange. It→s purpose is to transfer the pressure of the pipeline, thereby reducin‌g the high stress concentration in the flange base. Neck flange welding is a good desig©n for butt welding those flanges that are provided due to ‍their own constructive value. However, the price is re÷latively high because of the complicated production process of the product. Thread<ed (threaded) flange: The threaded flange is connected by th®readed fasteners. But the center of the product has a thread sizφe corresponding to the pipe. Its main advantage is that it can be assembled without weldin•g. Sliding flange: Sliding flange has a lower hub, because the pip♣e enters the single flange before welding. This is to provide sufficient strength inside and o₹utside the welding to avoid leakage. Sliding flanges are matched with boring p>ipes with slightly larger outer diameters. They are better than neck flange welding due to★ lower initial cost. flange Many users, but the cost of the latter de↔vice will not be low, due to the increase in the number of weld neck flanges, lap flange: i¶n practice, the lap flange is the same complete slidingε flange, unless it is in the hole and A radius between flange races. It is necessary for the rad ius to have the flange to contain the lap stub to complete. ♠Usually, the lap flange and the lap stub end mating together will assemble the system. The↔ socket welding flange is a similar sliding flange, unless it has a hole and a counter hole size'. The matching of the counter hole and the pipe allows the pipe to ↔be inserted into a sliding flange similar to the flange. The diameter of the smaller hole is φmatched with the same pipe with the same ID. The restriction is a buil✘t-in hole that stays at the bottom as a shoulder sleeve designed for pipes. This eliminates anyλ flow restrictions when using socket welding flanges.
　　1. In order to compact the sealing surface of the flat weldingφ flange, only a small pressure is required. As the required pressure drops, the size of the bolts aΩnd the number required are correspondingly reduced. After all, a plan is planned. A flat >welding flange product with a relatively small volume and a relative≠ly light weight. 　　 2. The production of flat welded flanges can save data and reduce costs↔. When the raw material of the pipe is special and the price is high, the c×ost of welding the flange of the same raw material will be high, and the use of this flange can £effectively save the cost of materials. Conducive to construction, when connecting, the bolt h'oles of the flange are inconvenient to align or to★ avoid replacing the flange bolt holes of the equipment, etc., the &use of this flat welded flange is very suitable.          3. The flat welding flange can save space and reduce weight in← the process of use. The most important thing is to ensure th≤at the head part will not leak. It has a very outstanding sealing function. The reason↓ why the size of the compact flange is reduced is because The diameter of the seal is reduced, ♦which will reduce the cross-section of the sealing surface. Also, the flange gask♣et has now been replaced by a sealing ring to ensure an outstanding m₩atching of the flat welded flange seal facing the sealing surface. 　　 flat welding flange♠ 　　 But it also has some disadvantages: 　　 Disadvantages of flat welding flange: 　　The main de€sign disadvantage of flat welded flanges is that it cannot ensure no le★akage. This is the lack of its planning: the connection is dynamic, and f or example, thermal expansion and fluctuating cyclic ₽loads will cause movement between the flange surfaces, which will affect the function of th e flange, which will damage the integrity of the flange and eventually lead to leakage. It is im≠possible for any product to be without shortcomings, just try to control thπe lack of products to the minimum, so the company tries to perfect the functions of the produc✘ts when producing flat welded flanges to make them play the greates±t role.
The principle and characteristics of the use of flan∞ges [ 2021-08-13 ]
      Flange work characteristics: 　　Flange work characteristi$cs: 　　 1. A self-control butterfly valve that can be remotely controlled, which also∑ has the characteristics of a flanged butterfly valve, and can be equipped with a wide range< of butterfly valves; 　　2. The power supply is the driving energy of the but"terfly valve, with a wide range of power sources, wide application range, sa∞ving human resources, and having work efficiency; 　　3. Convenient operation and easy to meet var™ious control requirements. It can be realized by selecting different actuators, sign≠al feedback, flow adjustment, explosion-proof and other functions; 　　4.≥ Ultra-miniaturization can be realized, mechanical self-locking can be realized, and different sea•ling rings can be changed to meet different working conditions. 　　The working principle of fεlange: 　　Using the actuator to input a standard s∏ignal of 0-10 mA, the motor group drives the gear, worm, and t™orque to drive the disc to rotate. When the valve is in© the fully open position, the thickness of the butterfly plate is the resistance of th→e medium flowing through the valve body, so the pressure drop generated by the valve is small, soπ it has better flow control characteristics. 　　Butterfly valve has two sealing types: ₹elastic seal and metal seal. For elastic sealing valves, the sealing ring can αbe embedded on the valve body or attached to the peripher∏y of the butterfly plate. The valve with metal seal generally has a longer life than the→ valve with elastic seal, but it is difficult to achieve a co₹mplete seal. Metal seals can adapt to higher operating temperatu•res, while elastic seals have the defect of temperature limitation. I☆f flanged butterfly valves are required to be used as flow control, the main t↕hing is to correctly select the size and type of the valve.
　The valve is an accessory of the pipeline, used to control the flow, pressure, and direction o↑f the fluid. The fluid to be controlled can be liquid, gas, gas-liquid mixture or solid-liquid↕ mixture.   one. Basic parameters of valve 　　The basic parameters of the valve→ include working pressure (PN), working temperature (T) and nominal diameter (DN). F'or various valves equipped on pipelines, nominal pressure and nominal diameter ÷are commonly used as basic parameters. Nominal pressure refers to the maximum working pr‌essure that a valve of a certain material can withstand at a specified temperature. The nominal ®diameter refers to the nominal inner diameter of the connecting end of the valve body πand the pipeline. Valves, pipelines and pipeline accessories of the same nomin∞al diameter can be connected to each other, which is interchangeable.   two. Valve classification € 　　 1. According to function and purpose 　　 According to the different functions of the valvεe, it can be divided into the following five types: 　　①Shutoff val♠ve 　　 shut-off valve is also called closed-circuit valve, its function is≠ to connect or cut off the medium in the pipeline. Block valves include gate valves, globe  valves, plug valves, ball valves, butterfly valves, and diaphragm∑ valves. 　　②Check valve 　　 Check valve is also called one-way valve ✔or check valve, its function is to prevent the back flow of the meαdium in the pipeline. For example, the suction valve¶ of the water pump belongs to the non-return valve category. 　　③Safety valve 　　 The role of↕ safety valves is to prevent the pressure of the medium in the pipeline or device from exceeding t'he specified value to protect the safe operation of subsequent equipment.≈ 　　④Regulating valve 　　The function of the regulating va¶lve is to regulate the pressure, flow and other parameters of the medium.' The regulating valve has different classification methods. Accordin"g to the purpose and function, the regulating valve can be divided into: 　　 (1) Tw™o-position valve. The two-position valve is mainly used to close or connect the medium. 　　 (2) Reg§ulating valve. The regulating valve is mainly used for regula'ting the coefficient. When selecting the valve, the ™flow characteristics of the regulating valve need to be determine♠d; the regulating valve can be divided into the following f™orms according to the structure: single-seat regulating valve; double-seat regulating val≈ve; sleeve regulating valve; angle regulating Valve; three-way regulating valve; diaphra<gm valve; butterfly valve; ball valve; eccentric rot✘ary valve. 　　 (3) Shut-off valve. Usually refers to a valve with a leakage rate of less than one  part in 100,000. 　　⑤Divert valve 　　 The diverter va∑lve includes various distribution valves and flow valves, etc., whose function is to distribute,✘ separate or mix the medium in the pipeline. 　　2. According to the valve driv★e mode 　　According to the valve drive mode, it can be divided into the following three types£: 　　①Automatic valve 　　 refers to valves that do not require external drive, •but rely on the energy of the medium to actuate the valve, such as safety ₽valves, pressure reducing valves, traps, check valves, εautomatic control valves, etc. 　　②Power driven valve 　　The power-driven va lve can be driven by various power sources. Including electric valves driven b‍y electricity, pneumatic valves driven by compressed air, hydraulic valves driven  by hydraulic pressure such as oil, and combinations of various driving methods, su★ch as pneumatic-electric valves. 　　③Manual valve 　　Manual valves use handwheels, handles, ♠levers, sprockets and other components to manipulate the valve action by mφanpower. When the valve closing torque is large, a gear or turb♣o reducer can be set between the handwheel and the valve stem. If necessary, universal ¶joints and drive shafts can also be used for long-dista∏nce operation. 　　3. Press the connection method 　　 ca™n be divided into the following six types accordin©g to the connection method: 　　①Threaded connection valve: ©The valve body has an internal thread or an external thread to connect with th$e pipe thread; 　　②Flange connection valve: the valve body h↕as a flange to connect with the pipeline flange; 　　③Welding connection valv™e: The valve body has a welding groove and is welded to the pipeline; 　λ　④Clamp-connected valve: the valve body has a clam<p to connect with the pipe clamp; 　　⑤ Card sleeve connection valve: It is connected with the pipe∑line by a card sleeve; 　　⑥Wafer connection valve: a connection form in εwhich the valve and the two pipes are directly clamped togethβer with bolts. 　　4. According to the valve body material 　　①Metal material va§lve 　　The valve body and other parts are made of metal materials, such as cast iron ♦valves, carbon steel valves, alloy steel valves, copper alloy valves, γaluminum alloy valves, lead alloy valves, titanium alloy valves, Monel alloy valv★es, etc. 　　②Non-metallic valve 　　The valve body and other parts are m
What is the role of calipers [ 2021-08-13 ]
The caliper can also be called a brake cylinder. There are a lot of pistons inside the caliper.‌ The function of the caliper is to push the brake pads to clamp the brake disc, so that the car canδ slow down. After the brake pads clamp the brake disc, the kinetic ener♦gy can be converted into heat energy. The brake system is a vital system iβn a car. The brake system is related to the driving stability and >driving safety factor of the car. The key components of the brake system include vacuum booster p£ump, brake master cylinder, brake cylinder, brake pads, and brake discs. Brake pads an≈d brake discs are basically wearing parts that need to be replaced on a regular basisσ. As the driving distance of the car increases, the brake pads♦ and brake discs will basically continue to wear. After thβe brake pads and brake discs are worn to a certain degree, they nee¥d to be replaced. If they are not replaced, the braking distance will∞ be affected. After the driver steps on the brake pedal, the master cylinder can push the br£ake cylinder through the brake fluid. At this time, the brak↕e cylinder can push the brake pads to clamp the brake disc. The vacuum booster pump provide↕s power assistance, and the vacuum booster pump allows the drive'r to easily step on the brake pedal. The brake fluid i>n the brake system needs to be replaced regularly. If it is not replaced for≠ a long time, it will affect the braking force and ​braking distance. Brake fluid is a kind of fluid that is easier to absorb wa∏ter. When the water content of the brake fluid reaches 3%, it needs to be replaced. After replacin"g the brake fluid, the air in the brake system pipeline needs to be emptied, otherwise the bra↔king force and braking distance may also be affected.
What are the functions of gears [ 2021-08-13 ]
　　 We have seen many products using gears in our lives, but do you know wαhat principle they use gears? According to its working principle, 　　 gear has the following fu₹nctions: First, gears can transmit mechanical power, such as automobile gear shifting devices, ×industrial gearboxes, etc.; second, gears can change the direction of movement, such aβs mechanical watches, shaking head devices in electric fans, etc.; third, gea★rs can reduce speed and Improve torque, such as motor reducer, various s★peed change mechanisms, etc. 　　Gear transmission mecλhanism 　　 Here are two interesting applications of gears in automobiles and aviation, le✘t's take a look at the role of gears in them. 　　 There is a mechanical structure iγn a car called a differential, which is an extremely important part. When a car turns, the spe‍eds of the inner and outer wheels are different. If there is no differential, the sp♣eeds of the inner and outer wheels are the same. The wheels sλlip and roll over. Moreover, the speed of the car is very fast, and it is absolutely impossible to× have no differential at high speeds. The gear here is on the differential, whiδch can not only transmit the power of the engine, but also reduc÷e the speed through the different speed ratios of the gear device, and at the same tim☆e can achieve a very cool "differential" function. 　₩　 three-dimensional model of differential 　　In aviation, helicopters using coaxial r♦eversal technology are favored by many countries because of their excellent performance. This h‌elicopter has two propellers on the same shaft. When the plane is fl↑ying, the rotation direction of the two propellers must be opposite €to ensure the power balance of the plane. 　　Helicopter using coaxial reversal technology 　　 From∏ the three-dimensional model of the coaxial reversal structure, it can be seen £that after two transformations of the gear, the mechanical transmission dλirection is smoothly changed, and two different rotation d•irections are realized on the same shaft.
Previous page
1
2