All-welded body design of the tubular structure and the spherical structure, the tubular structure is a double-weld heat input welding process
, The residual stress is complicated, large axial and radial deformation. Spherical structure is a four seam stitching work
Arts and technological progress, the use of in hot forging forming around the valve body, the middle of a single weld molding to reduce the line energy input
Case, to reduce the axial and radial deformation. The split structure generally consists of the body and the left and right connector body. Connector body and
The strength of the valve body by bolts, connecting the thickness of the flange and bolt connections shall inner diameter of the valve body corresponding to the flange into the
high temperature solenoid valve
Line analog design, the strength of the connection must prevent pipe stress the connection is loose, so that the seal failure. Body
Face-to-face contact with the connector body, the gap in the middle. The seal must meet the fire safety requirements, the use of the rubber O-ring
Winding metal pad combination sealed. The material of the valve body as forging temperature-29C ° or more optional ASTM
Selection of ASTM A350 LF2 A105;-29C °. Welded body, A105 or LF2 materials of the chemical composition
The points, the carbon content of carbon equivalent, as well as sulfur, phosphorus and other elements should be otherwise special restrictions. Forging three forgings standard inspection
Income, do 100% NDT weld the coloring inspection and ultrasonic testing. Gas pipeline ball valve body
Part A105, ball A105N. Pipeline ball valve valve body is the A105, the ball 316.
qs
2013年4月25日星期四
Seal seat and seal seat combined sealing structure
I.e. the initial metal to metal seal ", to block the entry of solid particles; rubber, PTFE, plastic, nylon
PEEK and other soft seal as a secondary seal, to ensure zero leakage. However, due to a foreign body in the pipeline accident import
Damage to the soft sealing material, pipeline ball valves are equipped with emergency sealant injection system for temporary
Sealing requirements. Sealed with a rubber ring has a circular, triangular, or other special shapes. Valve Company has its own
The design of the structure and process measures to prevent the rubber ring in the switching process is blown (Blow out) or cut bad. To
Class900 pounds above should be used in the proof Buck (AED) characteristics of the material as the O-ring material. PTFE
Seals, generally tubular mosaic structure, also made of barb-like modular structure designed to ensure the seal
The ring does not blow out and cause seal failure. Sealing seat material Body material, electroless nickel plating spring plus
Contained coil spring can be used to ensure that the initial sealing pressure ratio, spring, the board spring or disc spring, the material is
Inconel X-750. Symmetrical two-way inlet end and the outlet end of the valve seat seal design. This piston-mediated
The quality of the self-sealing structure can be designed according to customer needs into a single piston effect "(Single piston action)
Pressure from the discharge the sealing seat structure and double piston effect "(Double Piston effect) double sealed junction
Constitutive. Single piston effect that the import side seal automatic discharge outlet end chamber pressure.
DBB the functional design DBB functional design is whether the valve is open or closed, the valve cavity pressure relief discharge
, The upstream and downstream ends of the seat should be cut-off (Double Block & Bleed), and allow the drain valve at the
Line valve seat sealing performance test, without affecting the pipeline operation.
steam solenoid valves
Emergency sealing system design emergency sealing system by syringe (Injector) and non-return valve (Check Valve) group
Into, respectively, mounted on the valve body, the outside of the seat at the outer measured at the stem packing. The emergency sealing systems can
Used to prevent or reduce the leakage of pipeline valve sealing seat, clean and flush before the sealant injection,
Specializing in the production of detergents and seal fat, cleaning solvents, or sealing grease from the syringe port with manual or electric tools
Injection, according to instructions provided by the valve supplier for cleaning and emergency sealing operation. Fire safety and
Anti-static design described in the supporting shaft seal seat section, anti-static structural design, 24VDC measured
Fixed, the resistance value does not exceed 10 ohms.
PEEK and other soft seal as a secondary seal, to ensure zero leakage. However, due to a foreign body in the pipeline accident import
Damage to the soft sealing material, pipeline ball valves are equipped with emergency sealant injection system for temporary
Sealing requirements. Sealed with a rubber ring has a circular, triangular, or other special shapes. Valve Company has its own
The design of the structure and process measures to prevent the rubber ring in the switching process is blown (Blow out) or cut bad. To
Class900 pounds above should be used in the proof Buck (AED) characteristics of the material as the O-ring material. PTFE
Seals, generally tubular mosaic structure, also made of barb-like modular structure designed to ensure the seal
The ring does not blow out and cause seal failure. Sealing seat material Body material, electroless nickel plating spring plus
Contained coil spring can be used to ensure that the initial sealing pressure ratio, spring, the board spring or disc spring, the material is
Inconel X-750. Symmetrical two-way inlet end and the outlet end of the valve seat seal design. This piston-mediated
The quality of the self-sealing structure can be designed according to customer needs into a single piston effect "(Single piston action)
Pressure from the discharge the sealing seat structure and double piston effect "(Double Piston effect) double sealed junction
Constitutive. Single piston effect that the import side seal automatic discharge outlet end chamber pressure.
DBB the functional design DBB functional design is whether the valve is open or closed, the valve cavity pressure relief discharge
, The upstream and downstream ends of the seat should be cut-off (Double Block & Bleed), and allow the drain valve at the
Line valve seat sealing performance test, without affecting the pipeline operation.
steam solenoid valves
Emergency sealing system design emergency sealing system by syringe (Injector) and non-return valve (Check Valve) group
Into, respectively, mounted on the valve body, the outside of the seat at the outer measured at the stem packing. The emergency sealing systems can
Used to prevent or reduce the leakage of pipeline valve sealing seat, clean and flush before the sealant injection,
Specializing in the production of detergents and seal fat, cleaning solvents, or sealing grease from the syringe port with manual or electric tools
Injection, according to instructions provided by the valve supplier for cleaning and emergency sealing operation. Fire safety and
Anti-static design described in the supporting shaft seal seat section, anti-static structural design, 24VDC measured
Fixed, the resistance value does not exceed 10 ohms.
The mode of operation of the valve operation of the valve
Manual, worm gear, pneumatic (double acting or spring return), high-pressure pneumatic pipeline gas (direct)
Electric, hydraulic (double acting or spring return), and gas-liquid interaction. Gas-liquid interaction of local and remote control
SCADA system, and a satellite remote cooperates super multi-set value when the downstream pressure drop rate or duration
shut off solenoid valve, (Pipeline burst), emergency shut-off valve to automatically cut off, with emergency pressure accumulator for manual operation.
Pipeline ball valve connection ends designed to connect end according to customer requirements, flange connection end and welding ends. Flange connection end
With convex or annular groove dimensions, tolerances and finish, as well as drilling, flange faces, countersink holes, pour hole
Should be the following standard DN600 and below, according to ASME B16.5, DN550 MSS-SP44; DN650
On welding ends shall be ASME B16.47 Series A Section 434.8.6 ASME B31.4 or ASME B31.8.
Electric, hydraulic (double acting or spring return), and gas-liquid interaction. Gas-liquid interaction of local and remote control
SCADA system, and a satellite remote cooperates super multi-set value when the downstream pressure drop rate or duration
shut off solenoid valve, (Pipeline burst), emergency shut-off valve to automatically cut off, with emergency pressure accumulator for manual operation.
Pipeline ball valve connection ends designed to connect end according to customer requirements, flange connection end and welding ends. Flange connection end
With convex or annular groove dimensions, tolerances and finish, as well as drilling, flange faces, countersink holes, pour hole
Should be the following standard DN600 and below, according to ASME B16.5, DN550 MSS-SP44; DN650
On welding ends shall be ASME B16.47 Series A Section 434.8.6 ASME B31.4 or ASME B31.8.
Hydraulic valve device shortcomings
1) the oil temperature is affected by ambient temperature, oil temperature changes caused by changes in the viscosity of the oil, affect the operation;
2) piping trouble, prone to leakage;
3) the signal is not suitable for a variety of operations (such as signal amplification, memory, logic and other operations) occasions
flange solenoid valve
Hydraulic valve device has its advantages and shortcomings, we want to know how to avoid weaknesses in the course of,
Both give full play to its advantages, but also to avoid the loss caused by shortcomings.
2) piping trouble, prone to leakage;
3) the signal is not suitable for a variety of operations (such as signal amplification, memory, logic and other operations) occasions
flange solenoid valve
Hydraulic valve device has its advantages and shortcomings, we want to know how to avoid weaknesses in the course of,
Both give full play to its advantages, but also to avoid the loss caused by shortcomings.
Solenoid valve "bit" and "pass" each refers to what
Off solenoid valve is used to achieve a fluid path in the fluid path system, or the change in direction of liquid flow, it generally has a
One can be slidably driven in the coil an electromagnetic force spool, the spool in a different position, the solenoid valve passage
Is different. The working position of the spool several of the electromagnetic valve is called several solenoid valve: the valve interface,
Is the number of paths of the solenoid valve, through the intersection, called the solenoid valve solenoid valve.
Solenoid valve is installed, all interfaces should be connected to the so-called working position valve
The position of the core. The coil is not energized, the spool is in a position, in the B position when the coil is energized, the spool is in
Different positions, role play interface or on or closed.
The solenoid valve is a solenoid valve spool has two different working positions (ON, OFF).
Solenoid valve two-way, three-way electromagnetic valve body with two, three channel mouth;
For example, two two-way solenoid valve is entering a (two-channel, the most common and common)
Two three-way solenoid valve control liquid is entering two (two are normally open and one normally closed); pneumatic for
Is a solenoid valve into an exhaust; hydraulic entered an oil return.
These common sense understanding of the solenoid valve, I believe we got a better understanding of the electromagnetic valve. Solenoid valve
"Bit" refers to the working position of the spool, the "pass" refers to a passage on the valve body.
One can be slidably driven in the coil an electromagnetic force spool, the spool in a different position, the solenoid valve passage
Is different. The working position of the spool several of the electromagnetic valve is called several solenoid valve: the valve interface,
Is the number of paths of the solenoid valve, through the intersection, called the solenoid valve solenoid valve.
Solenoid valve is installed, all interfaces should be connected to the so-called working position valve
The position of the core. The coil is not energized, the spool is in a position, in the B position when the coil is energized, the spool is in
Different positions, role play interface or on or closed.
The solenoid valve is a solenoid valve spool has two different working positions (ON, OFF).
Solenoid valve two-way, three-way electromagnetic valve body with two, three channel mouth;
For example, two two-way solenoid valve is entering a (two-channel, the most common and common)
Two three-way solenoid valve control liquid is entering two (two are normally open and one normally closed); pneumatic for
Is a solenoid valve into an exhaust; hydraulic entered an oil return.
These common sense understanding of the solenoid valve, I believe we got a better understanding of the electromagnetic valve. Solenoid valve
"Bit" refers to the working position of the spool, the "pass" refers to a passage on the valve body.
Detailed advantages and disadvantages of hydraulic valve device
Hydraulic opening and closing the valve means is a hydraulic pressure regulating valve drive means controlled by power and perform
Line bodies of three major components. The control segment consists of pressure control valves, flow control valves, directional control valves and electrical
Gas control system. Power in part by an electric motor or air motor, hydraulic pump, fuel tank and other pieces of which is to
The effective power of the electric or pneumatic motor rotary shaft into the hydraulic drive fluid pressure. Hydraulic valve installed
Set actuator there are two, one is the executing agency of the hydraulic cylinder reciprocating linear motion, the other is the hydraulic
Motor actuators, rotary motion, the advantages and disadvantages of hydraulic valve device is as follows:
two position three way valve
Hydraulic valve device advantages
1) simple structure, compact, small size;
2) stable and reliable transmission;
3) a large output torque can be obtained;
4) Output torque can be obtained by the constant pressure relief valve precise adjustments, including the opening and closing torque tune
Whole, even hydraulic instrument directly reflected;
5) The speed of adjustment is convenient;
6) the sudden end of the power of the accident off the accumulator can still take advantage of one or several power-operated.
This long-distance pipeline automatic emergency shut-off valve and wellhead discharge valve has a special meaning.
Line bodies of three major components. The control segment consists of pressure control valves, flow control valves, directional control valves and electrical
Gas control system. Power in part by an electric motor or air motor, hydraulic pump, fuel tank and other pieces of which is to
The effective power of the electric or pneumatic motor rotary shaft into the hydraulic drive fluid pressure. Hydraulic valve installed
Set actuator there are two, one is the executing agency of the hydraulic cylinder reciprocating linear motion, the other is the hydraulic
Motor actuators, rotary motion, the advantages and disadvantages of hydraulic valve device is as follows:
two position three way valve
Hydraulic valve device advantages
1) simple structure, compact, small size;
2) stable and reliable transmission;
3) a large output torque can be obtained;
4) Output torque can be obtained by the constant pressure relief valve precise adjustments, including the opening and closing torque tune
Whole, even hydraulic instrument directly reflected;
5) The speed of adjustment is convenient;
6) the sudden end of the power of the accident off the accumulator can still take advantage of one or several power-operated.
This long-distance pipeline automatic emergency shut-off valve and wellhead discharge valve has a special meaning.
Pay attention to dynamic balancing valve installation location
Dynamic balancing valve installation position is not the same in different environments, the following specific environment combined with security
Installed Figure introduce.
In the central heating system installed in each heat exchanger water export or import, the implementation of manual adjustment;
Can be installed valve actuators, temperature sensors, climate compensation and other automatic control instrument to implement automatic control;
Outdoor central heating system, installed in the thermal entrance of each building on the return pipe or water pipe;
standard air cylinder
Central air-conditioning fan coil system, installed in the floor at the branch and individual air conditioning units coil into
The return pipe of the mouth or on the water supply pipe; valve actuators can also be installed with the automatic control instrument to implement automatic control.
In the the household control systems installed. Thermostatic valve, can be installed in the household entrance on the return pipe; household installation thermostatic valve
The control system must take the pressure outside connection type (special orders), installed in each building thermal entrance
Water supply pipe or each unit of shared water pipe riser; attention to outer join to take pressure tube connected to the return pipe on
; Each individual loop tops one, do not have to repeat the series.
Installed Figure introduce.
In the central heating system installed in each heat exchanger water export or import, the implementation of manual adjustment;
Can be installed valve actuators, temperature sensors, climate compensation and other automatic control instrument to implement automatic control;
Outdoor central heating system, installed in the thermal entrance of each building on the return pipe or water pipe;
standard air cylinder
Central air-conditioning fan coil system, installed in the floor at the branch and individual air conditioning units coil into
The return pipe of the mouth or on the water supply pipe; valve actuators can also be installed with the automatic control instrument to implement automatic control.
In the the household control systems installed. Thermostatic valve, can be installed in the household entrance on the return pipe; household installation thermostatic valve
The control system must take the pressure outside connection type (special orders), installed in each building thermal entrance
Water supply pipe or each unit of shared water pipe riser; attention to outer join to take pressure tube connected to the return pipe on
; Each individual loop tops one, do not have to repeat the series.
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