Resistance wire mesh reactor temperature control system
A technology of temperature control system and resistance wire mesh, applied in the direction of temperature control, control/regulation system, non-electric variable control, etc., can solve the problems of low temperature control accuracy, complicated control, large thermal inertia, etc., and achieve rapid temperature rise, Improved temperature control accuracy and timely cooling effect
Inactive Publication Date: 2015-12-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0003] The above equipment has the problem of low temperature control accuracy due to the large thermal inertia of the reaction zone in heating the sample.
Some sophisticated temperature control systems and devices are used in laboratories, but there are problems of expensive equipment and complicated control
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0025] figure 1 It is a structural schematic diagram of the resistance screen reactor temperature control system described in the embodiment of the present invention. It can be seen from the figure that it includes a resistance screen, electrodes, a first transformer, a bidirectional thyristor, a thyristor trigger, and a temperature sensor , a thermocouple input module, an analog voltage output...
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The invention discloses a resistance wire mesh reactor temperature control system, and belongs to the field of thermotechnical control. The temperature control system includes electrodes clamped on two ends of a resistance wire mesh, and also includes a first transformer, a bidirectional silicon controlled rectifier, a silicon controller rectifier trigger, a temperature sensor, a thermocouple input module, an analog voltage output module, an analog voltage input module and a controller, wherein the bidirectional silicon controller rectifier is arranged between external voltage and the electrodes, the silicon controller rectifier trigger is arranged between an output end of the analog voltage output module and a control end of the bidirectional silicon controlled rectifier, an input end of the analog voltage output module is connected with the controller, one end of the temperature controller is arranged at the resistance wire mesh, the other end is connected with an input end of the thermocouple input module, an output end of the thermocouple input module is connected with the controller, an input end of the analog voltage input module is connected with external voltage through the first transformer, and an output end of the analog voltage input module is connected with the controller. The system provided by the invention can realize a precise temperature rise or constant-temperature heating.
Description
technical field [0001] The invention belongs to the technical field of thermal control of solid fuel pyrolysis, gasification and combustion, and specifically relates to a temperature control system for a resistance wire mesh reactor, which is used to realize variable rate heating or constant temperature heating under the condition of minimizing secondary reactions . Background technique [0002] There are many kinds of reaction devices used in laboratories for scientific research on solid fuel pyrolysis, gasification and combustion, such as tube furnaces, fluidized beds, and reactors. These devices generally use electric heating, and the way solid fuel is heated in these devices is indirect heating, that is, the electric heating element generates heat after the current passes through the electric heating element, and the electric heating element that generates heat is used as a heat source to heat the reaction chamber. The fuel sample is finally heated and reacted inside th...
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IPC IPC(8): G05D23/22
Inventor 周俊波乔瑜龚勋徐明厚
Owner HUAZHONG UNIV OF SCI & TECH