An experimental apparatus for measuring the starting pressure gradient of pulverized coal.

By designing an experimental device with a locking mechanism, the problem of rapid pressure relief of the pressure gauge readings in existing devices was solved, and the accuracy and reliability of the coal powder start-up pressure gradient were achieved.

CN224624277UActive Publication Date: 2026-08-11贵州乌江煤层气勘探开发有限公司
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Patent Information

Application Number
CN202522269788.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-27
Publication Date
2026-08-11
Estimated Expiration
2035-10-27

AI Technical Summary

Technical Problem

When measuring the starting pressure gradient of pulverized coal in the existing experimental setup, the pressure gauge readings rapidly depressurize, making it impossible to accurately lock and maintain the pressure peak at the moment of pulverized coal startup, thus affecting the accuracy and reliability of the measurement.

Method used

An experimental device incorporating a locking mechanism was designed. Through components such as a support cylinder, a limiting guide plate, a movable slide cylinder, and a connecting slide cylinder, the pressure values ​​in the storage tank and the inner cavity of the air inlet pipe are automatically detected and locked to prevent the values ​​from resetting during the depressurization process, thus ensuring the stability and traceability of the pressure data.

Benefits of technology

It effectively prevents pressure values ​​from resetting during the pressure relief process, ensuring the stability and traceability of pressure data, and improving the accuracy and reliability of pulverized coal start-up pressure gradient measurement.

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Abstract

This utility model discloses an experimental device for measuring the starting pressure gradient of pulverized coal, relating to the technical field of pulverized coal measuring devices. It includes a storage tank, a feed pipe, an air inlet pipe, a connecting box, a support frame, and an air compressor. The output end of the air compressor is fixedly connected to the connecting box via an air delivery pipe. The connecting box is equipped with a locking mechanism for locking and maintaining the detected data. Through this locking mechanism, this utility model can automatically detect and lock the steadily rising pressure value in the storage tank and the inner cavity of the air inlet pipe during the pressurization of pulverized coal, effectively preventing the detected pressure value from automatically resetting during depressurization. This facilitates maintaining and recording the pressure value under the corresponding state, thereby ensuring the stability and traceability of the pressure data. By conveniently unlocking, the starting pressure gradient of pulverized coal can be remeasured based on the new pressure value, further improving the accuracy and reliability of the measurement.
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