How to use stainless steel liquid nitrogen tank safely

3. 1 storage operation

3. 1. 1 Check the supercharger inlet valve (HCV-3), the liquid level gauge stop valve (HCV-8 HCV- 10), the supercharger stop valve (HVC-1) and the throttle line stop valve (HCV-/kloc)

3. 1.2 check the liquid nitrogen tank every hour, check the pressure gauge (P 1- 1), control the pressure at 0.35~0.6Mpa, and record. When the pressure exceeds 0.6Mpa, open the exhaust valve (HCV- 12) to release the pressure to 0.45Mpa.

3. 1.3 Check the liquid nitrogen tank level meter every hour and record it. When the liquid level is lower than 100 cm water column, contact to add liquid nitrogen.

3.2 Normal operation

3.2. 1 After receiving the notice of using liquid nitrogen in the post, check that the pressure relief valve of the feed line should be closed, and open the product use valve 1(HCV- 13) and product use valve 2.

3.2.2 However, during use, pay attention to control the pressure gauge between 0.35~0.6Mpa and 0.6Mpa.

3.2.3 When the column stops using, first close the use valve 1, open the pressure relief valve of the feed pipe to discharge the liquid nitrogen in the feed pipe, then close the use valve 2 and close the pressure relief valve.

3. Operating procedures

3. 1 storage operation

3. 1. 1 Check the supercharger inlet valve (HCV-3), the liquid level gauge stop valve (HCV-8 HCV- 10), the supercharger stop valve (HVC-1) and the throttle line stop valve (HCV-/kloc)

3. 1.2 check the liquid nitrogen tank every hour, check the pressure gauge (P 1- 1), control the pressure at 0.35~0.6Mpa, and record. When the pressure exceeds 0.6Mpa, open the exhaust valve (HCV- 12) to release the pressure to 0.45Mpa.

3. 1.3 Check the liquid nitrogen tank level meter every hour and record it. When the liquid level is lower than 100 cm water column, contact to add liquid nitrogen.

3.2 Normal operation

3.2. 1 After receiving the notice of using liquid nitrogen in the post, check that the pressure relief valve of the feed line should be closed, and open the product use valve 1(HCV- 13) and product use valve 2.

3.2.2 However, during use, pay attention to control the pressure gauge between 0.35~0.6Mpa and 0.6Mpa.

3.2.3 When the column stops using, first close the use valve 1, open the pressure relief valve of the feed pipe to discharge the liquid nitrogen in the feed pipe, then close the use valve 2 and close the pressure relief valve.