CN-224231727-U - Combustible gas combustion speed testing machine

CN224231727UCN 224231727 UCN224231727 UCN 224231727UCN-224231727-U

Abstract

The utility model provides a flammable gas combustion speed testing machine, which comprises a gas mixing device, a purging pipeline, an electromagnetic valve, a testing box body, a testing tube device, an ignition device, a temperature control device and an exhaust gas neutralization device, and has the advantages that the temperature control device is arranged to be capable of providing a Zhou Di high-temperature environment for the outside of the testing tube device and used for simulating practical application scenes so as to improve the accuracy of gas combustion speed detection, the heating pipe in the heating box heats the air flow, and under the effect of the circulating fan, the air flow circularly flows in the heating box, the connecting box and the testing box, so that the periphery of the testing pipe device is gradually heated to the required temperature, the first thermocouple is used for measuring the real-time temperature so as to control the temperature-rising accuracy, after the test is finished, the exhaust fan is started, the air is discharged from the exhaust pipe, and the testing box is rapidly cooled so as to carry out the next round of test.

Inventors

WEN QIONG
LI ZHONGMING
LIU GUANG
LI DEJUN
WANG JIANLIN

Assignees

东莞市中诺质检仪器设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250603

Claims (5)

1. The combustible gas combustion speed testing machine is characterized by comprising a gas mixing device, a purging pipeline, an electromagnetic valve, a testing box body, a testing pipe device, an ignition device, a temperature control device and an exhaust gas neutralization device, wherein the testing pipe device is fixed in the testing box body, the ignition device is fixed at the lower end of the testing pipe device, the upper end of the ignition device is communicated with the testing pipe device, one end of the purging pipeline is communicated with the gas mixing device, the other end of the purging pipeline penetrates through the testing box body and is communicated with the lower end of the ignition device, the electromagnetic valve is installed on the purging pipeline, the exhaust gas neutralization device is fixed outside the testing box body and is communicated with the upper end of the testing pipe device through a pipeline, the temperature control device comprises a heating box body, a heating pipe, a first thermocouple, a connecting box body, a circulating fan, an exhaust fan and an exhaust pipe, the upper end and the lower end of the testing box body are respectively provided with a first ventilation hole and a second ventilation hole, the connecting box body is fixed at the testing box body and is communicated with the testing box body, the other end of the heating box body is fixed at the outer end of the testing box body through the heating pipe body and the heating pipe body, and the other end of the heating box body is fixed at the outer end of the testing box body through the heating pipe body.
2. The combustible gas combustion speed testing machine of claim 1 wherein the temperature control device further comprises an exhaust connector, wherein a plurality of groups of exhaust connectors are fixedly arranged on the exhaust pipe, and the exhaust connectors are communicated with the testing box body through pipelines.
3. The combustible gas combustion speed testing machine of claim 1 wherein the gas mixing device comprises a mixing container, a vacuum pump, a pressure sensor and a second thermocouple, wherein a magnetic stirring assembly is arranged in the mixing container, the purging pipeline is communicated with the upper end of the mixing container, the vacuum pump is communicated with the mixing container through a pipeline, the pressure sensor is fixed on the mixing container, the detection end corresponds to the mixing container, and the second thermocouple is fixed on the mixing container, and the detection end corresponds to the mixing container.
4. The combustible gas combustion speed testing machine according to claim 1, wherein the testing tube device comprises a testing glass tube, a connecting tube, an upper damping sleeve, a lower damping sleeve, a lifting pressing plate, a lifting screw and a rotating rod, the testing glass tube and the connecting tube are sequentially arranged above the ignition device, the upper end and the lower end of the upper damping sleeve are respectively sleeved on the connecting tube and the testing glass tube, the upper end and the lower end of the lower damping sleeve are respectively sleeved on the testing glass tube and the ignition device, the lifting pressing plate is fixed at the upper end of the connecting tube, the lower end of the lifting screw is rotatably arranged on the lifting pressing plate, the upper end of the lifting screw is in threaded connection with the upper end of the testing box, and the rotating rod penetrates through the lifting screw in the horizontal direction.
5. The combustible gas combustion speed testing machine of claim 4 wherein the exhaust gas neutralization device comprises a gas expansion tank, an exhaust gas neutralization tank and an exhaust gas discharge pipeline, wherein the gas expansion tank and the exhaust gas neutralization tank are both fixed on the testing box body, the upper end of the gas expansion tank is communicated with the connecting pipe through a pipeline, the lower end of the gas expansion tank is communicated with the exhaust gas neutralization pipe through a pipeline, the exhaust gas neutralization tank is used for containing a neutralization solution, and the exhaust gas discharge pipeline is fixed at the upper end of the exhaust gas neutralization tank.

Description

Combustible gas combustion speed testing machine Technical Field The utility model relates to the field of gas combustion detection equipment, in particular to a combustible gas combustion speed testing machine. Background The current mainstream gas combustion speed testing device generally adopts a technical architecture combining a closed cabin body and high-speed photography, and combustion speed data is obtained by recording the relation between the propagation distance of flame fronts and time. However, in the design process of such devices, the ambient temperature is often set to an ideal standard working condition (25 ℃), and the significant influence of temperature fluctuation on the gas combustion dynamics in the practical application scene is not considered. The system error caused by the temperature difference seriously affects the accurate design and safe operation of the combustion system. In order to improve the accuracy of gas combustion speed detection, it is necessary to develop a combustible gas combustion speed tester. Disclosure of utility model The utility model aims to provide a flammable gas combustion speed testing machine for solving the problems in the background art. In order to achieve the above object, the present utility model provides the following technical solutions: The utility model provides a combustible gas burning rate testing machine, including gas mixing device, purge line, the solenoid valve, the test box, the test tube device, ignition, temperature control device and exhaust gas neutralization device, the test tube device is fixed in the test box, ignition fixes the lower extreme at test tube device, ignition upper end and test tube device intercommunication, purge line's one end and gas mixing device intercommunication, test box and with ignition's lower extreme intercommunication are worn to establish to the other end, the solenoid valve is installed on purge line, exhaust gas neutralization device is fixed outside the test box and is connected with the upper end of test tube device through the pipeline, temperature control device includes the heating box, the heating pipe, first thermocouple, connect the box, circulating fan, exhaust fan and blast pipe, the upper and lower both ends of test box are equipped with first ventilation hole and second ventilation hole respectively, connect the box to be fixed outside the test box and be connected with the test box through first ventilation hole, the heating pipe is fixed outside the test box and is fixed in the heating box and is corresponding to the test tube, the outside of test box is connected with the blast pipe through the blast pipe, the other end is fixed on the blast pipe is connected with the exhaust pipe respectively. The temperature control device further comprises an exhaust connector, a plurality of groups of exhaust connectors are fixedly arranged on the exhaust pipe, and the exhaust connectors are communicated with the test box body through pipelines. Further describing the utility model, the gas mixing device comprises a mixing container, a vacuum pump, a pressure sensor and a second thermocouple, wherein a magnetic stirring assembly is arranged in the mixing container, a purging pipeline is communicated with the upper end of the mixing container, the vacuum pump is communicated with the mixing container through a pipeline, the pressure sensor is fixed on the mixing container, the detection end corresponds to the mixing container, and the second thermocouple is fixed on the mixing container, and the detection end corresponds to the mixing container. The test tube device comprises a test glass tube, a connecting tube, an upper damping sleeve, a lower damping sleeve, a lifting pressing plate, a lifting screw and a rotating rod, wherein the test glass tube and the connecting tube are sequentially arranged above the ignition device, the upper end and the lower end of the upper damping sleeve are respectively sleeved on the connecting tube and the test glass tube, the upper end and the lower end of the lower damping sleeve are respectively sleeved on the test glass tube and the ignition device, the lifting pressing plate is fixed at the upper end of the connecting tube, the lower end of the lifting screw is rotatably arranged on the lifting pressing plate, the upper end of the lifting screw is in threaded connection with the upper end of the test box body, and the rotating rod penetrates through the lifting screw in the horizontal direction. The utility model is further described in that the waste gas neutralization device comprises a gas expansion tank, a waste gas neutralization tank and a waste gas discharge pipeline, wherein the gas expansion tank and the waste gas neutralization tank are both fixed on the test box body, the upper end of the gas expansion tank is communicated with the connecting pipe through the pipeline, the lower end of the gas expansion tank is communicated with the waste gas neutral