Coal seam gas sampling device
By designing a sliding connection between the extraction pipe, the air inlet head, and the auxiliary mechanism, as well as a motor-driven suction fan, the problem of leakage during the gas sampler sampling process was solved, enabling rapid and convenient gas sampling and improving sampling accuracy and efficiency.
CN224399068UActive Publication Date: 2026-06-23COALFIELD GEOLOGICAL CENTER OF THE GEOLOGICAL BUREAU OF XINJIANG UYGUR AUTONOMOUS REGION
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Patent Information
- Application Number
- CN202521609775.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2035-07-31
AI Technical Summary
Technical Problem
Existing gas samplers require inserting and removing the sampling head into the pipeline during sampling, which can lead to sample leakage and inaccurate concentration detection.
Method used
A coal seam gas sampling device was designed, including a gas extraction pipe, a gas inlet head, a connector mechanism, a gas extraction mechanism, and an auxiliary mechanism. The device achieves rapid start-up and stop of sampling through a sliding connection and a valve ball design, and accelerates gas collection by combining a motor-driven suction fan.
Benefits of technology
It enables rapid and convenient gas sampling, reduces leakage, and improves sampling accuracy and efficiency.
✦ Generated by Eureka AI based on patent content.
Abstract
A coal seam gas sampling device comprises a gas extraction pipe used for extracting gas, and a gas outlet pipe is arranged on the side wall of the gas extraction pipe; the air inlet head is detachably arranged at the bottom of the exhaust pipe; the connector mechanism is slidably connected to the side wall of the air inlet head; the air exhaust mechanism is slidably connected to the inner wall of the air exhaust pipe; the auxiliary mechanism is arranged at the bottom of the air exhaust mechanism and comprises an air suction fan; and the air collecting airbag is detachably connected with the air outlet pipe. During sampling, the gas inlet head is pushed downwards, so that the valve ball moves upwards, a gap exists between the valve ball and the opening, and at the moment, collected gas can enter the exhaust pipe through the gap. After collection is finished, the exhaust pipe is pulled upwards, so that the conical pipe moves upwards, the valve opening rod is separated from the opening, and the valve ball blocks the opening again due to gravity; the output end of the motor is fixedly connected with the suction fan, and the suction fan is driven to rotate after the motor is started, so that the airflow speed is increased, and the gas collection speed is increased.
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