CN2658744Y - Zirconium oxide oxygen content analyzer - Google Patents

Abstract

The utility model discloses an analyzer for the oxygen content of the zirconium dioxide consisting of a case, a digital display, a CPU, an oxygen sensor, a shielded cable, a relay, a pump, a valve, a gas pipe, a heater and a thermoelectric couple. An output control device is disposed between the CPU and the oxygen sensor. The output control device is connected with the relay. The relay is connected with an automatic check device composed of a pump and a valve in parallel. The output side of the automatic check device is connected with the oxygen sensor. The CPU is connected with a front-built electric oxygenic potential input device and a detection device in parallel. The front-built electric oxygenic potential input device is connected with the oxygen sensor. The changed internal resistance of the oxygen sensor can be detected through a computer in order to execute a 24-hour programmed self-correction. The utility model not only reduces the maintenance capacity for the workers, but also enhances the accuracy of using the equipment, also measures and monitors in a digital-display way and through the output DC current; and analyzes the accurate data of the oxygen content in the smoke of various industrial boilers.

Description

The zirconia oxygen analyzer

One, technical field:

The utility model zirconia oxygen analyzer, what relate to is analysis to measure instrument technical field, particularly zirconium oxide-oxygen component analysis Instrument technology field, be widely used in electric power, metallurgy, petrochemical industry, light industry, etc. the industrial operation system.

Two, background technology:

The zirconia oxygen analyzer of Sheng Chaning has several versions in the market, a kind of zirconia oxygen analyzer, use in Industrial Boiler, cellar for storing things stove high-temperature flue because the zirconium oxide-oxygen amount detector is long-term, multiple corrosive gas is arranged in the flue, and these gases corrode Zirconium oxide oxygen sensor for a long time.Cause the Zirconium oxide oxygen sensor change in resistance after Zirconium oxide oxygen sensor is corroded, cause measuring error after the change in resistance.Present domestic zirconia oxygen analyzer all needs artificial regularly to field maintemance, just makes the zirconia oxygen analyzer obtain adjusting, and levelling is inconvenient, the levelling low precision.The zirconia oxygen analyzer of external import adopts the verification of timing standard gas, calibrating gas verification cabinet is away from lambda sensor, having open defect is: one, owing to adopt calibrating gas to separate matter as verification, tie-in point very easily leaks gas, they are two years old, calibrating gas verification cabinet is away from lambda sensor, and loaded down with trivial details by the dress step, they are three years old, the timing verification of adopting can't be carried out the real variation of monitoring in 24 hours and in time carry out detection check.

Three, summary of the invention:

The purpose of the utility model zirconia oxygen analyzer is that to overcome the measuring error that domestic instrument exists big, external instrument can't carry out the real open defect that changes and in time carry out detection check of monitoring in 24 hours, designs a kind of compact conformation, synchronous monitoring and in time carries out the zirconia oxygen analyzer of detection check.Its technology is achieved in that the structure that comprises shell, digital demonstration, CPU, lambda sensor, shielded conductor, relay, pump, valve, gas pipeline, well heater, thermopair, it is characterized in that: between CPU and lambda sensor, be provided with control output, control output is connected relay, the relay connection connects lambda sensor by the pump of parallel connection, automatic check device, the automatic check device output terminal that valve is formed, it is preposition preposition with detection that CPU inserts oxygen electromotive force input in parallel, and the oxygen electromotive force is imported preposition connection lambda sensor.The positive effect of implementing after this technology is: can detect the lambda sensor change in resistance automatically in microcomputer, when lambda sensor change in resistance deviation exceeds certain limit.Program will begin to adjust automatically, after the end to be adjusted, continues to detect the lambda sensor resistance, when resistance deviation, adjustment once more once more.Energising start CPU picks up counting, and program is carried out automatically and revised after 24 hours.Finish the back measuring ability and begin to detect, and be benchmark to begin detected lambda sensor resistance, when detecting the lambda sensor resistance and exceed certain limit, revision program begins to revise automatically, revise finish after.Measuring ability continue to detect, and is benchmark with this detected lambda sensor resistance, and when detecting the lambda sensor resistance and exceed certain limit once more, revision program begins to revise once more automatically.Workman's maintenance but also the accuracy that raising equipment uses had so not only been reduced.Measure and monitor with form and output DC stream signal that numeral shows, analyze the accurate numerical value of oxygen level of flue gas in the various Industrial Boilers.

Four, description of drawings:

Fig. 1 is a structural representation of the present utility model

Wherein, 1-power supply, 2-CPU, the demonstration of 3-state, 4-data presentation, 5-add that thermal output, 6-control output, the output of 7-signal, the input of 8-thermoelectrical potential, the input of 9-oxygen electromotive force are preposition, 10-detects preposition, 11-relay, 12-relay, 13-pump, 14-valve, 15-lambda sensor, 16-well heater, 17-thermopair;

Five, embodiment:

The utility model is further described with A type zirconia oxygen analyzer below in conjunction with accompanying drawing:

See accompanying drawing 1, with CPU (2) is the center, the upper end is provided with numeral and shows (3,4), CPU (2) lower end is provided with and adds thermal output (5), control output (6), signal output (7), thermoelectrical potential input preposition (8), detect preposition (10) oxygen electromotive force inputs in parallel preposition (9), preposition (9) one terminations of oxygen electromotive force input are gone into lambda sensor (15), insert by relay (12) between control output (6) other end and the lambda sensor (15), pump (13), valve (14) is formed automatic check device, the valve of automatic check device (14) output is connected with lambda sensor (15) by gas pipeline, well heater (16) is located at outside the lambda sensor (15), the interior thermopair (17) of thermoelectrical potential input (8) and well heater (16) is connected, be connected in series between the other end of well heater (16) and the CPU and add thermal output (5), relay (11), relay (11), the power input of relay (12) inserts power supply, automatic check device, lambda sensor (15), well heater (16), thermopair (17) is loaded in the detector housing, CPU (2), state shows (3), data presentation (4), add thermal output (5), control output (6), signal output (7), thermoelectrical potential input (8), oxygen electromotive force input preposition (9), detect preposition (10), relay (11), relay (12) is loaded in the controller housing, all the other each points that show as accompanying drawing connect by shielded conductor.

See accompanying drawing 1, energized (1), CPU (2) work, the description of its course of work is:

Energized (1), CPU (2) work, state shows that (3) show that the oxygen amount is 00, and data presentation (4) shows that the oxygen value is 25.00, adds thermal output (5) simultaneously and opens relay (11), and well heater (16) begins heating.Thermoelectrical potential input (8) simultaneously begins to receive the signal of thermopair (17) output, and state shows that (3) temperature is 01, and data presentation (4) is a temperature value.Oxygen electromotive force input (9) simultaneously begins to receive the signal of lambda sensor (15) output, and state shows that (3) show that the oxygen electromotive force is 02, and data presentation (4) shows that oxygen potential value (overflow value) is-19.99; Signal output (7) is output as 0.By detecting preposition (10) CPU (2) is picked up counting simultaneously; At this moment, add thermal output (5) and export control signal always, make well heater (16) keep duty, when thermoelectrical potential input (8) received (29.13mv) 700 ℃, CPU (2) entered the temperature control state, and well heater (16) is remained in 700 ℃ ± 5 ℃ scopes; When detection preposition (10) timing reaches 24 hours, CPU (2) enters automatic adjustment program, instruction control output (5) trigger relay (11), open pump (13), valve (14) is sent into air in the lambda sensor (15) by gas pipeline, produce the background electromotive force, the background electromotive force that produces is revised automatically by CPU (2).

Claims (1)

1. The utility model zirconia oxygen analyzer, comprise shell, numeral shows (3,4), CPU (2), lambda sensor (15), shielded conductor, relay (11,12), pump (13), valve (14), gas pipeline, well heater (16), the structure of thermopair (17) is interior, it is characterized in that: between CPU (2) and lambda sensor (15), be provided with control output (6), control output (6) connects relay (12), relay (12) connects the pump (13) by parallel connection, valve (14) is formed automatic check device, the automatic check device output terminal connects lambda sensor (15), CPU (2) inserts oxygen electromotive force input preposition (9) in parallel and detects preposition (10), and oxygen electromotive force input preposition (9) connects lambda sensor (15).