Device for determining expansion pressure and expansion displacement generated by coking coal based on self-regulation of spring

A device for determining an expansion pressure and an expansion displacement generated by coking coal based on self-regulation of a spring, the device comprising:

• a detection mechanism;
• a pyrolysis reactor;
• two porous pressing plates;
• two metal filter plates;
• an upper connecting flange;
• a lower connecting flange;
• a lightweight connecting rod;
• the spring;
• a sealed bellows;
• a volatile escape pipeline;
• and
• a carbonization furnace;
• wherein the detection mechanism comprises a displacement sensor and a pressure sensor;
• a lower end of the detection mechanism is connected to a mounting baffle;
• the mounting baffle is configured to be driven by the detection mechanism to move up and down;
• and the mounting baffle comprises a gas escape hole;
• the pyrolysis reactor is configured to accommodate and pyrolyze a coal sample;
• and upper and lower ends of the pyrolysis reactor comprise an upper opening and a lower opening, respectively;
• the two porous pressing plates are disposed within the pyrolysis reactor;
• the two porous pressing plates consist of a first porous pressing plate and a second porous pressing plate;
• the first porous pressing plate is disposed on an upper side of the coal sample;
• the second porous pressing plate is disposed on a lower side of the coal sample;
• and the first porous pressing plate and the second porous pressing plate are configured to compress and fix the coal sample;
• the two metal filter plates are disposed within the pyrolysis reactor and consist of a first metal filter plate and a second metal filter plate;
• the first metal filter plate is disposed between the coal sample and the first porous pressing plate;
• and the second metal filter plate is disposed between the coal sample and the second porous pressing plate;
• the upper connecting flange is connected to the upper opening of the pyrolysis reactor;
• and a center of the upper connecting flange comprises a through hole;
• the lower connecting flange is connected to the lower opening of the pyrolysis reactor;
• a middle of the lower connecting flange comprises a support rod extending into an inside of the pyrolysis reactor;
• an end of the support rod abuts against the second porous pressing plate at the lower side of the coal sample in the pyrolysis reactor to fix the second porous pressing plate;
• and the lower connecting flange comprises a gas escape channel;
• one end of the lightweight connecting rod is fixedly connected to an outer side of the first porous pressing plate, and the other end of the lightweight connecting rod passes through the through hole on the upper connecting flange to extend out of the pyrolysis reactor and is capable of moving freely up and down in the pyrolysis reactor;
• and a gap is disposed between the lightweight connecting rod and the through hole on the upper connecting flange;
• one end of the spring is connected to the mounting baffle on the detection mechanism, and the other end of the spring is connected to the end of the lightweight connecting rod extending out of the pyrolysis reactor;
• the sealed bellows is sheathed outside the spring;
• one end of the sealed bellows is fixed on the through hole on the upper connecting flange, and the other end of the sealed bellows is fixedly connected to the mounting baffle to form a sealed channel for communicating the through hole on the upper connecting flange with the gas escape hole on the mounting baffle;
• the volatile escape pipeline is respectively connected to the gas escape hole on the mounting baffle and the gas escape channel on the lower connecting flange to discharge gas generated during a pyrolysis process of the coal sample from the upper opening and the lower opening of the pyrolysis reactor;
• the carbonization furnace comprises the pyrolysis reactor;
• and
• the detection mechanism and the pyrolysis reactor are fixed by a bracket.