Solenoid valve actuator assembly is the main form of electronic jacquard opening,

With the improvement of living standards, people dress fabric requirements are also increasing , making the needle can produce a large number of high-grade fabric , the rapid development of high-speed electronic jacquard machine . Solenoid valve assembly is formed mainly electronic jacquard actuator opening, a jacquard  Instrumentation ball valves  to thousands pack assembly , its quality directly affects the reliability of the quality of the fabric and production efficiency. Today, there are four main jacquard production companies in the world , they each have their own solenoid valve assembly . Our After years of research, the use of domestic raw materials, combined with the actual production process of the factory,   Double ferrule fitting  improvement and optimization, has successfully developed electronic jacquard solenoid valve assembly used . The structure of this component by 8 Electromechanical Components needle selection unit , each unit includes a needle selection solenoid valves, two fixed hooks, two spring hooks , 2 Needle , a consolidated block back , a briquetting spring , a group composed of the pulley rope . Each needle selection unit controls the same set of warp tissue , compared to other types of electronic jacquard his electromagnetic valve structure allows the use of this combination is arranged inside the electronic jacquard machine is more compact and reasonable to reduce energy consumption ; simple structure easy to disassemble , easy maintenance and replacement ;

Standardized prefabricated manifold forms, changed some of the limitations of the past in the field of direct production and installation

Philatelic oil, set to close the ball valve petrol station inside and oil and gas gathering pipelines, are used in the form of standardized prefabricated valve, changed in the past in the field of direct production and installation of some limitations. Project site assembly is relatively reduced, adverse effects of climate and other factors is small, while the dismantling of prefabricated valve interchangeability with regularity and speed up the construction progress. Reasonable to avoid the aerial assembly. Narrowing the range of operations, reducing the security  Stainless steel needle valve . Prefabricated valve materials are mostly carbon steel, stainless steel; in the number of low-pressure pipelines primarily to a relatively small proportion of high-pressure pipelines; presence of a large number of saddle mouth open system workload; butt weld seam in the form of the main;  Instrument valve manifolds  for welding high. To ensure the quality and performance of our valve products and processes using reasonable prefabricated welding backing, automatic welding cap surface welding process. And distortion factors to be produced during welding and lifting analysis to take effective control measures.

Prefabricated metering valve between the process, according to the condition of the structure, characteristics and possible causes deformation produced

During the welding process , the structure is subjected to uneven heating and cooling , the metal parts of different degrees of expansion and contraction . Metallic material as a whole, interrelated, mutual restraint, elongation and shortening are not free , so the welding process will produce stress and deformation . Welding deformation leads to the size and shape of the weldment changes directly affect the manufacturing quality . If the distortion exceeds the normal range , you need to rework correction processing , reduce work efficiency, but also increase the cost of production. Between the metering valve prefabricated process, depending on the situation should be carefully analyzed its structure ,  Stainless steel needle valve  and possible causes deformation , select a reasonable measures to control the deformation process , meet the technical standards in order to improve the effectiveness and reduce unnecessary losses . When the valve between the measured deformation reason prefabricated , conducted at the Department of  Instrument valve manifolds  tube cutting and welding are localized uneven heating process . Cutting and welding , thermal expansion of the high temperature region , hindered by the rigidity of the surrounding area and can not freely low elongation , resulting thermoplastic deformation. Upon cooling, the high-temperature region due to shrinkage of the thermoplastic deformation of the large amount of shrinkage in a low temperature region is small, this causes uneven shrinkage generated manifolds condensed bending.

The causes valve preform deformation process may be analyzed

Prefabricated manifold for reasons that may arise during deformation are analyzed to select a reasonable anti-deformation process measures to control the deformation, to meet the standards and requirements in order to improve effectiveness and reduce losses. Deformation analysis valve manifold reasons prefabricated pipe saddle on the mouth of the Department oxygen acetylene cutting and welding, are  Instrument valve manifolds  and cooling, the thermal expansion of the high temperature region, the rigidity of the low-temperature region by the surrounding obstacles can not be stretched freely long, resulting thermoplastic deformation. When cooled, high-temperature thermoplastic deformation of the area due to contraction of large, low-temperature region produces a small amount of shrinkage, this  High pressure ball valve  to contraction of the portal produce condensed riser bending and angular distortion arising condensation. Simultaneously welded fast heating and rapid cooling, high temperature region of the tissue changes, the corresponding change in volume will occur, resulting in tissue deformation. Condensed deformation and deformation of the joint action organization, making the valve sink pipe bending deformation riser manifolds on angular distortion generated.

Plastic air intake manifolds that is the vehicle structural member is complex, and requires high functional element is

Automotive plastic has the general trend garnish and upholstered structure and function of the steering member, i.e., the plastic intake manifold is very complex automotive structural parts and functional parts are demanding. At present, the domestic design and manufacture of plastic intake manifold technology does not pass. This article is part of the research and development of plastic intake manifold methods. For the domestic is still not self-designed plastic intake  Instrument valve manifolds  mold. Authors believe that the use of CAE technology must advance on plastic intake manifold injection molding process simulation study, in order to achieve the success of this mold design. For plastic intake manifold,  Valve manifold  is difficult. Firstly, the Charade car engine carried a plastic intake manifold runner design simulation, mainly studied under different program number and location of the deformation, bubbles, weld lines, etc., come in the form of four water filling points for the best and to determine the best location of the gate.

Structures of complex shape plastic intake manifold has been widely applied

In recent years, the high efficiency of the engine , reduce fuel consumption , improve performance and reduce exhaust emissions have become increasingly demanding situations , conventional engine design concepts are constantly updated. As for the engine performance , fuel consumption and other aspects important part of one huge impact - the engine intake system , particularly intake manifold design requirements are constantly improved, some highly integrated, complex plastic structural shapes intake manifold tube has been widely used. Plastic  Instrument valve manifolds  wall is smooth , to reduce air resistance , easier to design the engine according to the performance requirements of complex structure and shape , can effectively enhance the engine power , improve the economy and emissions , while light weight plastic intake manifold , material and  High pressure ball valve  low cost. Engine intake manifold plastic technology is a global trend . Engine development project in the background , in the 1.3-1.5L engine passenger cars on the basis of the design study of the plastic intake manifold . First, the impact of the engine intake system of ventilation process conducted in-depth research , focusing on the dynamic effects of the intake and exhaust gas pipelines , gas flow intake system energy losses exist two aspects , the proposed intake manifold overall design ideas.

Plastic intake manifold light weight, low material and manufacturing costs, smooth wall, the air flow resistance can be reduced

Plastic intake manifold light weight , low material and manufacturing costs , smooth wall , the air flow resistance can be reduced to improve engine performance , economy and emissions improvement . Currently , gasoline plastic intake manifold design technology has matured , the country already independent research and mass production, while diesel plastic intake manifold design is still in its infancy. Plastic instead of metal as a car engine intake manifold material , the intake manifold is the trend of the development lies. However, in the design and  Instrument manifolds  of the intake manifold , the assembly of the research is the development process is often overlooked issue. This article will be mounted design ideas throughout the plastic intake manifold design is always , can be assembled primarily through the design and evaluation , research and analysis of the plastic intake manifold can be assembled . First, the structure and  Stainless steel needle valve  the engine and the intake manifold is analyzed . Followed by the assembly from the engine , and the engine intake manifold assembly , the assembly and maintenance of four intake manifold intake manifold accessories detailed analysis of the engine intake manifold assembly process and assembly difficulty. Explore again from the subsidiary parts, assembly sequence , ergonomics and summarizes the evaluation of three engine intake manifold assembly of quality standards and principles , focusing on human-computer engineering from the engine intake manifold assembly were studied .

Mathematical models at different valve opening degree, aimed at digital electro-hydraulic proportional controller design has excellent control performance...

Electro-hydraulic proportional control technology with high control accuracy, easy adjustment, the relative electro-hydraulic servo valve, with a better price advantage, currently in the industrial field, heavy machinery and other production areas have a more widely used. Electro-hydraulic proportional control of the core technologies in the closed-loop algorithm design, flutter superimposed signals, dead-time control and so on. On the basis of analyzing the characteristics of the proportional flow valve, the establishment of a mathematical model of the valve opening at different degrees, aimed at digital electro-hydraulic  Instrument valve manifolds  controller design has excellent control performance. Proportional flow valve core structure diagram is generally proportional flow by the throttle valve heart, springs, and some contain pressure compensator. This paper studies the proportional flow valve composed by the three-part series,  Compression fitting  principle. Spool movement to establish the mechanical model paper analyzes the influence of the force spool only steady state, ignoring the transient fluid dynamics and the oil outlet steady flow force, mainly analyzes the electromagnetic force, the inlet steady flow force, the spring force , fluid pressure.

Compound turbo system can achieve a good match with the diesel engine in the whole range of operating conditions, improving diesel power

Energy shortage and environmental pollution are two major challenges that face the world today, the development of efficient, clean diesel engine is a key issue in the study. Conventional exhaust gas turbocharger is difficult taking into account the high-speed, low-speed diesel engine operating conditions, the simultaneous existence of part-load economy and acceleration performance and poor. Compound turbo system can be implemented in the whole operating range of diesel engines with a good match, improving the engine power, economy and emissions, has drawn  Stainless steel needle valve  at home and abroad. Firstly, the use of software to establish a composite turbocharged diesel engine simulation model and numerical simulation. The simulation results show that the composite turbocharged engine to improve low-speed, high-speed power and economy. Meanwhile, the composite obtained by numerical simulation turbo intake system and exhaust bypass valve bypass valve control strategy provides a reference for the trial.  2 way manifolds  optional turbocharged, engine bench tests conducted research complex turbocharged. Were matched based on the high-pressure stage turbocharger optimal fuel economy principles. Composite turbocharged program conducted to determine control strategies of different speed and load, the effect of the exhaust bypass valve and the intake bypass valve opening on engine performance, determine the total working conditions and wastegate intake bypass valve opening degree control.

Compound turbo system can achieve a good match with the diesel engine in the whole range of operating conditions, improving diesel power

Energy shortage and environmental pollution are two major challenges that face the world today, the development of efficient, clean diesel engine is a key issue in the study. Conventional exhaust gas turbocharger is difficult taking into account the high-speed, low-speed diesel engine operating conditions, the simultaneous existence of part-load economy and acceleration performance and poor. Compound turbo system can be implemented in the whole operating range of diesel engines with a good match, improving the engine power, economy and emissions, has drawn  Stainless steel needle valve  at home and abroad. Firstly, the use of software to establish a composite turbocharged diesel engine simulation model and numerical simulation. The simulation results show that the composite turbocharged engine to improve low-speed, high-speed power and economy. Meanwhile, the composite obtained by numerical simulation turbo intake system and exhaust bypass valve bypass valve control strategy provides a reference for the trial.  2 way manifolds  optional turbocharged, engine bench tests conducted research complex turbocharged. Were matched based on the high-pressure stage turbocharger optimal fuel economy principles. Composite turbocharged program conducted to determine control strategies of different speed and load, the effect of the exhaust bypass valve and the intake bypass valve opening on engine performance, determine the total working conditions and wastegate intake bypass valve opening degree control.

Compound turbo system can achieve a good match with the diesel engine in the whole range of operating conditions, improving diesel power

Energy shortage and environmental pollution are two major challenges that face the world today, the development of efficient, clean diesel engine is a key issue in the study. Conventional exhaust gas turbocharger is difficult taking into account the high-speed, low-speed diesel engine operating conditions, the simultaneous existence of part-load economy and acceleration performance and poor. Compound turbo system can be implemented in the whole operating range of diesel engines with a good match, improving the engine power, economy and emissions, has drawn  Stainless steel needle valve  at home and abroad. Firstly, the use of software to establish a composite turbocharged diesel engine simulation model and numerical simulation. The simulation results show that the composite turbocharged engine to improve low-speed, high-speed power and economy. Meanwhile, the composite obtained by numerical simulation turbo intake system and exhaust bypass valve bypass valve control strategy provides a reference for the trial.  2 way manifolds  optional turbocharged, engine bench tests conducted research complex turbocharged. Were matched based on the high-pressure stage turbocharger optimal fuel economy principles. Composite turbocharged program conducted to determine control strategies of different speed and load, the effect of the exhaust bypass valve and the intake bypass valve opening on engine performance, determine the total working conditions and wastegate intake bypass valve opening degree control.

Heat load and close when burning diesel, turbocharger boost pressure control and economy-related

When the natural gas used in gasoline engines may be appropriate to increase the compression ratio, ignition timing and engine supercharger strengthened. In order to reduce emissions and improve fuel gas economy, the lean gas engine by way of control of NOx emissions, the use of  Stainless steel needle valve  produce higher power output, the thermal load near the diesel fuel and turbocharger boost pressure control and related economic . Often work in small engine load, the load is determined by adjusting the degree of  Instrument valve manifolds  of the throttle body, throttle body is generally mounted on the intake manifold, throttle pressure before the small load will be much higher than the intake manifold pressure, inlet pressure booster form does not form useful work on the engine, and therefore, the need to boost pressure under small load control to reduce fuel consumption.

Centrifugal fans are an important part of the oil cooling system for a high-performance helicopter

Centrifugal fan is an important part of high-performance helicopter oil cooling system, which drive the cold air through the oil cooler, took over the transmission system cooling oil heat, ensure the normal operation of helicopter main reduction system.  Instrumentation ball valve  fan performance the quality of the oil radiator as well as the efficiency of the entire oil system plays a vital role as an engine oil cooling system components helicopters, centrifugal fan with low flow, high pressure, high speed, small size Features This article based on the characteristics of a  Instrument valve manifold  a fan, a detailed analysis of the design parameters of the basic structure and calculation, blade profile, the preparation of the versatility of the design software, the use of technology to achieve the automatic generation of the impeller three-dimensional graphics, and gives the design instance.

Small high-pressure centrifugal fans are widely used in the production of agricultural products and feed processing

Small high-pressure centrifugal fans are widely used in the production of agricultural products and feed processing. It is the air transportation of grain and. Grind materials, feed and tea important equipment, but also some agricultural fluidized drying equipment necessary. Common fluidized drying machines, requiring its work in optimal flow velocity (apparent wind), which requires changes in load or when dry materials that increase or decrease the amount of wind  Instrument valve manifolds . According to the working principle of the fan performance curve and the pipe resistance curve of intersection of the fan for the fan's operating point, thus changing the substance of the air volume is to change the fan operating point. Small wind turbines used to change the throttle and speed control are two ways to change the amount of wind. In order to reduce the fan shaft power,  Instrument manifolds  is placed in the fan inlet side of the tube, by varying the valve angle (ie, changing the opening) to achieve increased pipe resistance off a small butterfly, the characteristic curve of the pipe. Adjustment method, although the increase the butterfly losses, there is no economic side, but because the method is simple, reliable, easy to operate, the scope of the requirements in the regulation on small wind turbines are still too large widely used.

Stainless steel needle binding file for some exploring ways

Stainless steel needle binding file for some way to explore is to do a presentation, for reference. File binding job requirements. (1) integrity. Whether it is based on the volume or stapling finisher, make sure the file is complete full page binding. Security (2) file entity. Try not to ask the destruction of files  Instrument manifolds  entity, an entity not to file damage, on the other hand to ensure the relative safety  Instrument valve  and physical binding file. (3) To facilitate the use of the file. On the one hand to facilitate the use of archives staff provides file services, on the other hand facilitate the information needs of those who use the file archives information. High (4) efficiency. Archives staff to complete the work as much as possible in the shortest binding file. 2 Binding method currently used file exists insufficient.