SINOTRUK Howo WD615 Engine Parts- Spring-For Safety Valve VG14070068
Basic information
JCHHR supply full range SINOTRUK, HOWO, HOWO PART, HOWO SPARE PARTS，STEYR, WEICHAI，WABCO, WABCO VALVES, WABCO BRAKE PART， SHACMAN, SHACMAN F2000 PARTS, SHACMAN F3000 PARTS, SINOTRUCK, SITRAK spare parts，professional service and good price
HOWO spare parts，HOWO dump truck parts，Original HOWO parts，HOWO truck parts，HOWO A7 truck spare parts，Genuine HOWO truck parts，Original HOWO spare parts，HOWO 371 truck spare parts,
HOWO part, HOWO tipper truck, HOWO 336, HOWO 371, HOWO concrete mixer, HOWO 70T，HOWO 70T mining truck parts, HOVA, HOVA 60, HOVA mining truck, HOVA parts, HOVA 60T, STEYR WD615，Original STEYR spare parts, STEYR 91 series, STEYR dump truck, STEYR WD618, WEICHAI，Original WEICHAI parts, Genuine WEICHAI part, WEICHAI spare parts, WEICHAI WD615, WEICHAI WP10, WEICHAI WP12, WD615，WD615 engine parts, WD615.47, WD615.69, WD615 336hp, WD615 371hp, WD618 diesel engine parts, WD618 420hp, D10 engine parts, D12 engine parts.
Specifications
|
PRODUCT NAME |
VG14070068 |
OE NO. |
VG14070068 |
BRAND NAME |
SINOTRUK Howo |
|
MODEL NUMBER |
VG14070068 |
TRUCK MODEL |
WP10, WP12, WP6, WP7, WP5, WP4, WP3, WD615, WD618 |
PLACE OF ORIGIN |
Shandong, China |
|
SIZE |
Standard Size |
CERICATION |
CCC |
APPLICABLE |
Howo |
|
FACTORY |
CNHTC SINOTRUK |
TYPE |
BELT |
MOQ |
1pc |
|
APPLICATION |
ENGINE SYSTEM |
QUALITY |
High-Performance |
MATERUAK |
Rubber |
|
PACKING |
Standard Package |
SHIPPING |
By sea, By air |
PAYMENT |
T/T |
Relevant Knowledge
Spring type safety valve refers to a valve or plunger seal that is locked by the elastic pressure of the spring. Once the pressure of the pressure vessel is abnormal, the high pressure generated will overcome the spring pressure of the safety valve, so the locking device is pushed open, forming a pressure relief channel to relieve the high pressure.
1、 Working principle of spring safety valve
When the steam pressure under the safety valve flap exceeds the compression force of the spring, the valve flap is pushed open. After the valve disc is jacked open, the exhaust steam acts on the valve disc clamping ring due to the rebound of the regulating ring, causing the valve to quickly open. As the valve flap moves upward, steam impinges on the upper adjusting ring, making the exhaust direction tend to be vertically downward. The reaction force generated by exhaust pushes the valve flap upward, and within a certain pressure range, keeps the valve flap at a sufficient lifting height. With the opening of the safety valve, steam is continuously discharged, and the steam pressure in the system gradually decreases. At this time, the force of the spring will overcome the steam pressure acting on the valve disc and the reaction force of exhaust steam, thereby closing the safety valve.
2、 Structural characteristics of spring safety valves
1. The action point of the valve rod force is reduced, and the sealing performance is improved. The valve rod force acting point of an ordinary planar valve disc is not only higher than the sealing surface, but also not directly acting on the valve disc. For valves with flexible discs, the point of application of the stem force decreases below the sealing surface and acts directly on the disc. This structural improvement greatly improves the anti vibration ability of the valve, which means that the sealing stability is greatly improved. In other words, flexible disc valves are less prone to leakage when the valve has the same degree of vibration. This performance has been verified in the actual operation of the safety valve.
The "flexible valve flap" structure not only improves the operational sealing performance, but also improves the operational pressure value to maintain sealing performance. "For a designed plain disc valve, when operating at a pressure that rises to the valve set pressure (i.e., 95% of the set pressure), the valve will experience" pre relief. ". For spring loaded safety valves, the presence of "pre discharge" is a normal phenomenon, and the presence of "pre discharge" can help spring loaded safety valves to some extent take off. Therefore, Crosby Company sets the difference between the design pressure and the maximum operating pressure of the spring type safety valve at more than 5%.
The "flexible valve flap" structure directs the system pressure into the annular groove on the back side of the valve flap sealing surface and acts on the annular inclined surface opposite the valve flap sealing surface. Due to the elasticity of the sealing surface, as the pressure of the medium in the system increases, the valve flap sealing surface is pushed downward by the system pressure, causing slight deformation, and tightly combines with the nozzle sealing surface, thereby delaying the valve pre discharge point.
