Electric Ball Valve is operated by Electric Actuator, the actuator has open close type and regulating type, power 24VDC, 220VAC. valve have different type and material for optional, socket welding and flanged type, PVC, CPVC, PVDF, PP, PPH, EPDM, PTFE lined. standard following DIN, ANSI, JIS, pressure rate of PN10, PN16, 150LB, 10K. size from 1/2" to 12", limited switch, solenoid valve are optional.
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Side impact design requirements
Original car collision result
Structural optimization scheme
Optimized test verification
Conclusion
Connection: Flange DIN PN10, ANSI CL150, JIS10K; socket DIN, ANSI, JIS, CNS, BS; Thread BSPT, NPT.
Body Material: PVDF,PVC,CPVC,PP,PPH,PTFE lined WCB
Seal material: EPDM;FPM;FKM;VITON
Seat Material: PTFE
Design pressure:1.0Mpa(PN10 bar)
Operating type:Open/Shut, Regulating
Power supply:DC24V;AC220V;AC380V
Optimization and Test of Side Impact Structure of Automobile
With the increase in the number of cars in the world and the increasing damage of road traffic, car crash performance has become an important part of the car design process. The form of side collision described in this paper is often seen in the daily driving process. The test method described in this paper is to use the 950kg deformable moving barrier to collide vertically at a speed of 50km/h according to the requirements of the regulations GB20071-2006 and ECE R95. Analyze the collected dummy data and body deformation on the side of the car to find structural problems and optimize them to meet regulatory requirements.
Since GB20071-2006 is consistent with the ECE R95 regulations, the following is replaced by regulations. The regulations require a deformable moving barrier of (950 ± 20) kg weight to hit the side of the vehicle at a speed of (50 ± 1) km / h, as follows:
1) The dummy head injury index HIC ≤ 1000.
2) The compression of the three ribs of the chest is ≤42mm and VC≤1m/s.
3) The pelvic force is ≤6kN.
4) Abdominal force ≤ 2.5kN.
5) The door must not be opened during the test.
6) After the test, the door can open enough space without the aid of tools to allow the occupants to escape.
7) Internal equipment or components after collision shall not have sharp corners or zigzag corners.
8) If the fuel leaks after the collision, the leakage rate is ≤30g/min.
According to the regulatory requirements and previous development experience, when designing the side collision of the whole vehicle, the body structure should be designed and evaluated from the following points: the intrusion speed of the B-pillar inner waistline is <7m/s, the intrusion amount is <150mm; the side door inner panel The intrusion speed of the corresponding area with the dummy's chest is <8m/s, the intrusion amount is <180mm; the middle of the B-pillar is not bent, and the whole is anti-"S" shape; the side door anti-collision beam (plate) has no obvious bending point, and the overall deformation is gentle; The fuel tank has no risk of deformation and breakage.
The 950kg deformable moving barrier collides vertically with the target A-class vehicle at a speed of 50.385km/h. The data of the dummy after the collision is:
1) The head injury index HIC is 84.
2) The compression of the upper, middle and lower ribs of the chest were 46 mm, 34.3 mm and 31.7 mm, respectively, and VC was 0.97 m/s, 0.64 m/s and 0.59 m/s, respectively.
3) The pelvic force is 2.19 kN.
4) The abdominal force is 0.9kN.
5) During the test, the door is not open. After the test, the right door can be opened. The internal equipment of the passenger compartment has no sharp corners and the fuel tank is not damaged.
It can be seen from the dummy data that the rib compression on the chest exceeds the required value of the regulatory standards. The initial moment of displacement of the upper rib is 33 ms, and the maximum deformation time is 52 ms, which does not meet the regulatory requirements.
By optimizing the inner plate of the B-pillar, the B-pillar shield is weakened at the same time, the energy absorbed by the B-pillar is increased, and the damage of the B-pillar invading the dummy's chest is reduced, thereby meeting the regulatory requirements. In the test, the acceleration, velocity and displacement curve of the sensor in the middle part of the B-pillar, the maximum acceleration is 43g@21ms, the maximum speed is 7.4m/s@35ms, and the maximum intrusion is 110mm. Through analysis, the intrusion speed is too high, which leads to the ribs on the chest. The main reason for the large amount of deformation.
According to the optimization scheme, the side impact test is still carried out according to the requirements of the regulations. The collision speed is 50.32km/h. The chest injury index of the test result is greatly improved compared with the previous test, which can meet the requirements of the regulations. The data of the dummy after the collision is:
1) The head injury index HIC is 50.
2) The compression of the upper, middle and lower ribs of the chest were 36.4 mm, 31 mm and 33 mm, respectively, and VC was 0.54 m/s, 0.36 m/s and 0.53 m/s.
3) The pelvic force is 1.9kN.
4) The abdominal force is 1.2kN.
5) During the test, the door is not open. After the test, the right door can be opened. The internal equipment of the passenger compartment has no sharp corners and the fuel tank is not damaged.
After the test, the maximum speed of intrusion in the middle of the B-pillar was 7m/s@29ms. Compared with the original model, the intrusion speed decreased and reached the peak in advance, effectively reducing the damage to the dummy's chest.
In the side collision, due to the limited energy absorption space, there is a certain challenge for the vehicle without airbag protection to meet the regulatory requirements. The B-pillar structure and the guard plate optimization can reduce the intrusion speed of the B-pillar and effectively reduce the damage value to the dummy.