| 摘要 |
FIELD: oil and gas extractive industry. ^ SUBSTANCE: device has hermetically sealed cylinder filed with reagent, cylinder with beads and plunger with grooves, elastic element and is also provided with additional cylinder and rod. Rod is mounted in additional cylinder and connected to plunger by non-rigid connection. Additional cylinder is connected to plunger and rod by same connection. Plunger and/or additional rod has drive limiter. Elastic element is mounted on additional cylinder. ^ EFFECT: higher efficiency and reliability. ^ 4 cl, 2 dwg |
