FW-2 High Negative Pressure Gas Collector Coal Mine Underground Gas Sampling and Detection Tool

Description :

  The FW-2 high negative pressure gas sampler is a gas sampling equipment designed specifically for coal mine underground and industrial hazardous environments, mainly to solve the technical problem of difficult to effectively extract gas in low concentration or slightly positive pressure environments. The device generates a stable high negative pressure source through its built-in high-performance manual or pneumatic pump structure, ensuring that it can overcome long-distance pipeline resistance and quickly and completely suck the gas to be tested into the sampling bag or detection instrument. As a key front-end tool in the mining safety monitoring system, the FW-2 high negative pressure gas extractor is widely used in the pre-treatment of gas composition analysis in gas drainage pipelines, mining workfaces, and return airways, ensuring the authenticity and representativeness of subsequent chromatographic analysis or sensor detection data. It is the basic hardware support for preventing gas accidents and optimizing ventilation management.

  The core specifications of the FW-2 high negative pressure gas extractor are reflected in its negative pressure generation capacity and sealing performance. The designed negative pressure value can usually reach the range of -60kPa to -80kPa, and the specific value depends on the actual working condition configuration. The shell is mostly made of high-strength engineering plastic or aluminum alloy material, which has undergone anti-static and anti-corrosion treatment and meets the safety mark certification requirements for coal mine products. The internal air system is connected by aging resistant and acid alkali resistant PTFE or silicone hoses, and multiple O-ring seals are equipped at the interface to prevent sample dilution caused by external air mixing. This equipment complies with relevant coal industry standards such as MT/T, and has explosion-proof certification and mining product safety mark certificate. The overall structure is compact, with a weight controlled within 1.5kg, making it easy to grip with one hand. The key moving parts have undergone wear-resistant treatment to ensure their service life and stability under frequent pulling actions.

  When selecting the FW-2 high negative pressure gas sampler, it is necessary to clarify the specific pressure environment and gas composition characteristics of the sampling point. If the sampling point is located in a high negative pressure area such as the gas drainage main pipeline, it is necessary to confirm whether the maximum negative pressure value of the equipment meets the requirements of overcoming pipeline resistance; If used for trace gas sampling, attention should be paid to its dead volume size and cleaning convenience. Compared with ordinary positive pressure sampling balls, the FW-2 high negative pressure gas extractor has the advantage of actively extracting gas, which is suitable for scenarios without self pressure or slight positive pressure. However, it is not suitable for direct inhalation of highly corrosive gases containing a large amount of dust, moisture, or unfiltered gas. Such working conditions require the installation of a pre installed steam water separator and dust filter. Purchasing personnel should verify whether the equipment has valid explosion-proof markings (such as Exib I Mb), and confirm the compatibility of the matching sampling bag or testing instrument interface to avoid air leakage or sampling failure due to interface mismatch.

  The daily maintenance focus of FW-2 high negative pressure gas extractor is on air tightness inspection and internal cleaning. Before each use, the air inlet should be manually closed for negative pressure testing, and the pointer or tactile feedback should be observed to determine if there is any leakage; After use, clean air or nitrogen should be used to blow the internal gas path to prevent residual gas accumulation or moisture from corroding the valve body. When stored for a long time, the equipment should be placed in a dry and ventilated place to avoid direct sunlight that can cause rubber parts to age. Common faults include poor handle reset and insufficient negative pressure, which are often caused by internal spring fatigue or worn sealing rings. It is recommended to regularly replace vulnerable sealing components. Operators should receive professional training, strictly follow coal mine safety regulations for sampling operations, ensure the standardized use of FW-2 high negative pressure gas sampler in flammable and explosive environments, and ensure personal and equipment safety.

AfterSalesService :