CN210953937U - Intelligent control multi-carry gas sample injector - Google Patents
Intelligent control multi-carry gas sample injector Download PDFInfo
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- CN210953937U CN210953937U CN201921417859.7U CN201921417859U CN210953937U CN 210953937 U CN210953937 U CN 210953937U CN 201921417859 U CN201921417859 U CN 201921417859U CN 210953937 U CN210953937 U CN 210953937U
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Abstract
The utility model relates to an intelligent control multi-stage gas sample injector, which relates to the field of gas sample injectors, and comprises a gas sample injector body and a carrier gas detection display system; the carrier gas detection system comprises a pressure detection system, a flow rate detection system and a display system; the pressure detection system is arranged at an inlet of the gas sample injector; the flow velocity detection system is arranged in a flow stabilizing pipe at the inlet of the gas sample injector and is used for detecting the flow velocity of the carrier gas and giving an alarm when the flow velocity detection value exceeds the allowable range of the flow velocity set value or is not equal to the flow velocity set value; the display system is connected to the carrier gas pressure detection system and the carrier gas flow rate system. The utility model discloses have the gas quality of carrier gas when improving gaseous appearance, and then improve gas chromatograph's the effect of detection precision.
Description
Technical Field
The utility model belongs to the technical field of gas chromatograph's technique and specifically relates to a gaseous injector of wisdom control multiple bit.
Background
The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by utilizing a chromatographic separation technology and a detection technology, and generally comprises a gas path system, a sample introduction system, a separation system (chromatographic column system), a detection and temperature control system and a recording system, wherein the general analysis process comprises the following steps: the carrier gas flows out from a high-pressure steel cylinder, flows through a gasification chamber at a stable pressure and a constant speed after being depressurized, dried and purified, is mixed with the sample gas and carries the sample gas into a chromatographic column for separation, each separated component flows into a detector along with the carrier gas in sequence, then the carrier gas is discharged, the detector converts the concentration or quality signals of different components into electric signals, and the electric signals are recorded by a recorder (a chromatographic workstation), so that the chromatogram can be obtained to finish qualitative and quantitative analysis.
Generally, a gas phase spectrometer requires pure carrier gas, good tightness, stable flow rate and good constant temperature effect. Therefore, in order to improve the detection accuracy, the pressure and flow rate of the carrier gas during the detection process are important.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a many carry gas sample injector of wisdom control can improve the gaseous gas quality of carrier gas when advancing the appearance, and then improves gas chromatograph's detection precision.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a many carry gas sample injectors of wisdom control, includes gas sample injector body, its characterized in that: the device also comprises a carrier gas detection display system; the carrier gas detection system comprises a pressure detection system, a flow rate detection system and a display system;
the pressure detection system is arranged at the inlet of the gas sample injector and used for detecting the pressure of carrier gas and giving an alarm when the pressure detection value exceeds the allowable range of the pressure set value or is not equal to the pressure set value;
the flow velocity detection system is arranged in a flow stabilizing pipe at the inlet of the gas sample injector and is used for detecting the flow velocity of the carrier gas and giving an alarm when the flow velocity detection value exceeds the allowable range of the flow velocity set value or is not equal to the flow velocity set value;
the display system is connected with the carrier gas pressure detection system and the carrier gas flow rate system and is used for displaying a carrier gas pressure value and carrier gas pressure value response curve and a carrier gas flow rate value and carrier gas flow rate value response curve.
By adopting the technical scheme, the pressure and the flow rate of the carrier gas are detected by the carrier gas pressure detection system and the carrier gas flow rate detection system respectively at the inlet of the gas sample injector, and an alarm is sent when the carrier gas pressure detection value exceeds the allowable range of the pressure set value or is not equal to the pressure set value or the carrier gas flow rate detection value exceeds the allowable range of the flow rate set value or is not equal to the flow rate set value, so that the carrier gas enters the gas sample injector according to the pressure and the flow rate specified by the detection requirement, the quality of the carrier gas entering the gas sample injector is improved, and the detection precision of the sample gas is improved under the condition that the quality of the sample.
The utility model discloses further set up to: the pressure detection system comprises a pressure detection module, a pressure signal processing module and a pressure alarm module;
the pressure detection module is arranged at the inlet of the gas sample injector and used for detecting the pressure of carrier gas at the inlet of the gas sample injector and outputting a pressure detection signal;
the pressure signal processing module is connected with the pressure detection module and used for receiving and processing the pressure detection signal and outputting a pressure driving signal when the pressure detection value exceeds the allowable range of the pressure set value or is not equal to the pressure set value;
the pressure alarm module is connected with the pressure signal processing module and used for receiving the pressure driving signal and outputting a pressure alarm signal when receiving the pressure driving signal;
through adopting above technical scheme, realize the detection, signal processing and the warning of carrier gas pressure, send alarm signal when pressure detection value surpasss pressure setting value allowed range or is not equal to the pressure setting value, be convenient for remind measurement personnel, prevent not conform to the carrier gas that detects required regulation pressure and get into in the gas injector to improve the quality of getting into the carrier gas in the gas injector, improve the detection precision of sample gas under the unchangeable condition of sample gas quality.
The utility model discloses further set up to: the pressure detection module is set as an XGZP6847 type pressure transmitter module.
By adopting the technical scheme, the XGZP6847 type pressure transmitter module detects the carrier gas pressure at the inlet of the gas sample injector and outputs a pressure detection signal.
The utility model discloses further set up to: the pressure signal processing module comprises a first pressure set value unit, a first comparator, a second pressure set value unit and a second comparator;
the first pressure set value unit is used for setting a first pressure set value and outputting a first pressure set value signal;
the non-inverting input end of the first comparator is connected with the pressure detection module, the inverting input end of the first comparator is connected with the first pressure set value unit and used for receiving the pressure detection signal and the first pressure set value signal, comparing the pressure detection value with the first pressure set value and outputting a pressure driving signal when the pressure detection value is larger than the first pressure set value;
the second pressure set value unit is used for setting a second pressure set value and outputting a second pressure set value signal, and the second pressure set value is smaller than or equal to the first pressure set value according to the detection requirement;
the non-inverting input end of the second comparator is connected to the second pressure set value unit, the inverting input end of the second comparator is connected to the pressure detection module and used for receiving the pressure detection signal and the second pressure set value signal, comparing the pressure detection value with the second pressure set value, and outputting a pressure driving signal when the pressure detection value is smaller than the second pressure set value.
By adopting the technical scheme, the pressure set value unit sets a first pressure set value, the first comparator compares the pressure detection value with the first pressure set value and outputs a pressure driving signal when the pressure detection value is larger than the first pressure set value, the second comparator compares the pressure detection value with the second pressure set value and outputs the pressure driving signal when the pressure detection value is smaller than the second pressure set value, the pressure detection signal is processed together, and the pressure driving signal is output when the pressure detection value exceeds the allowable range of the pressure set value or is not equal to the pressure set value.
The utility model discloses further set up to: the pressure alarm module comprises a first current limiting resistor, a first pull-down resistor, a first triode and a first buzzer; the first current limiting resistor is connected in series with the pressure signal processing module and the base electrode of the first triode; one end of the first pull-down resistor is connected to the base electrode of the first triode, and the other end of the first pull-down resistor is grounded; the collector of the first triode is connected to one end of the first buzzer, and the emitter of the first triode is grounded; one end of the first buzzer is connected to the collector of the first triode, and the other end of the first buzzer is connected to the control power supply.
Through adopting above technical scheme, when pressure alarm module received pressure drive signal, first triode switched on, and first buzzer sends the warning, and then reminds detection personnel in time to take measures, prevents that the pressure from not conforming to the carrier gas entering gas injector that the detection requirement stipulated, influences the detection effect of appearance gas.
The utility model discloses further set up to: the flow velocity detection system comprises a flow velocity detection module, a flow velocity signal processing module and a flow velocity alarm module;
the flow velocity detection module is arranged in a flow stabilizing pipe at the inlet of the gas sample injector and is used for detecting the flow velocity of the carrier gas in the flow stabilizing pipe and outputting flow velocity detection signals;
the flow rate signal processing module is connected with the signal detection module and used for receiving the flow rate detection signal, processing the flow rate detection signal and outputting a flow rate driving signal when the flow rate detection value exceeds the allowable range of a flow rate set value or is not equal to the flow rate set value;
the flow rate alarm module is connected to the flow rate signal processing module and used for receiving the flow rate driving signal and giving an alarm when receiving the flow rate driving signal.
Through adopting above technical scheme, realize the detection of carrier gas flow rate, signal processing and warning, send alarm signal when the velocity of flow detected value surpasses velocity of flow set value allowed range or is not equal to the velocity of flow set value, be convenient for remind detection personnel, prevent to be not conform to the carrier gas that detection requirement stipulated the velocity of flow and get into in the gas injector to improve the quality of getting into the carrier gas in the gas injector, improve the detection precision of sample gas under the unchangeable condition of sample gas quality.
The utility model discloses further set up to: the flow velocity detection module is set as a vortex shedding flowmeter.
Through adopting above technical scheme, vortex flowmeter detects the carrier gas flow rate of gas injector entrance and output flow rate detected signal.
The utility model discloses further set up to: the flow rate signal processing module comprises a first flow rate set value unit, a third comparator, a second flow rate set value unit and a fourth comparator;
the first flow rate set value unit is used for setting a first flow rate set value and outputting a first flow rate set value signal;
the non-inverting input end of the third comparator is connected with the flow rate detection module, the inverting input end of the third comparator is connected with the first flow rate set value unit and used for receiving the flow rate detection signal and the first flow rate set value signal, comparing the flow rate detection value with the first flow rate set value and outputting a flow rate driving signal when the flow rate detection value is larger than the first flow rate set value;
the second flow rate set value unit is used for setting a second flow rate set value and outputting a second flow rate set value signal, and the second flow rate set value is smaller than or equal to the first flow rate set value according to the detection requirement;
and the non-inverting input end of the fourth comparator is connected with the second flow rate set value unit, the inverting input end of the fourth comparator is connected with the flow rate detection module and is used for receiving the flow rate detection signal and the second flow rate set value signal, comparing the flow rate detection value with the second flow rate set value, and outputting a flow rate driving signal when the flow rate detection value is smaller than the second flow rate set value.
By adopting the technical scheme, the flow rate set value unit sets a first flow rate set value, the third comparator compares the flow rate detection value with the first flow rate set value and outputs a flow rate driving signal when the flow rate detection value is larger than the first flow rate set value, the fourth comparator compares the flow rate detection value with the second flow rate set value and outputs a flow rate driving signal when the flow rate detection value is smaller than the second flow rate set value, the flow rate detection signals are processed together, and the flow rate driving signal is output when the flow rate detection value exceeds the allowable range of the flow rate set value or is not equal to the flow rate set value.
The utility model discloses further set up to: the flow rate alarm module comprises a second current limiting resistor, a second pull-down resistor, a second triode and a second buzzer; the second current limiting resistor is connected in series with the flow rate signal processing module and the base of the second triode; one end of the second pull-down resistor is connected to the base electrode of the second triode, and the other end of the second pull-down resistor is grounded; the collector of the second triode is connected to one end of the second buzzer, and the emitter of the second triode is grounded; one end of the second buzzer is connected to the collector of the second triode, and the other end of the second buzzer is connected to the control power supply.
Through adopting above technical scheme, when velocity of flow alarm module received velocity of flow drive signal, the second triode switched on, and second bee calling organ sends the warning, and then reminds detection personnel in time to take measures, prevents to be not conform to the carrier gas entering gas sample injector that requires the regulation velocity of flow that detects, influences the detection effect of appearance gas.
The utility model discloses further set up to: the display system comprises a first ADC0809 chip, a second ADC0809 chip, an STC89C52 singlechip and an LCM128645ZK type liquid crystal display;
the first ADC0809 chip is connected to the pressure detection system and used for receiving the carrier gas pressure signal, performing analog-to-digital conversion on the received carrier gas pressure signal and outputting a pressure conversion signal;
the second ADC0809 chip is connected with the flow rate detection system and used for receiving the carrier gas flow rate signals, performing analog-to-digital conversion on the received carrier gas flow rate signals and outputting flow rate conversion signals;
the STC89C52 single chip microcomputer is connected with the first ADC0809 chip and the second ADC0809 chip and is used for receiving the pressure conversion signal and the flow rate conversion signal and outputting a pressure display driving signal or a flow rate display driving signal when receiving the pressure conversion signal or the flow rate conversion signal;
the LCM128645ZK type LCD is connected with the controller and is used for receiving the pressure display driving signal and the flow rate display driving signal and dynamically displaying the response curve of the carrier gas pressure value and the response curve of the carrier gas flow rate value and the carrier gas flow rate value after receiving the pressure display driving signal or the flow rate driving signal.
By adopting the technical scheme, the response curve of the carrier gas pressure value and the response curve of the carrier gas flow rate value and the carrier gas flow rate value are dynamically displayed, so that the pressure and the flow rate of the carrier gas can be observed and analyzed by detection personnel conveniently, the pressure and the flow rate of the carrier gas can be further monitored, and the quality of the carrier gas can be conveniently controlled and adjusted.
To sum up, the utility model discloses a beneficial technological effect does:
1. the carrier gas pressure detection system and the carrier gas flow rate detection system are arranged to detect the pressure and the flow rate of the carrier gas, and an alarm is given when the carrier gas pressure or the flow rate detection value exceeds a set value allowable range or is not equal to the set value, so that the carrier gas is ensured to enter the gas sample injector according to the pressure and the flow rate specified by the detection requirement, the quality of the carrier gas entering the gas sample injector is improved, and the detection precision of the sample gas is improved under the condition that the quality of the sample gas is not changed;
2. through display module developments demonstration pressure detection value and velocity of flow detection value, the pressure and the velocity of flow of the carrier gas of the detection personnel of being convenient for are observed and are analyzed, further monitor the pressure and the velocity of flow of carrier gas, conveniently control the adjustment to the carrier gas quality.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a pressure signal processing module; 2. a pressure alarm module; 3. a flow rate signal processing module; 4. and a flow rate alarm module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the utility model discloses an intelligent control multi-stage gas sample injector, which comprises a gas sample injector body, a pressure detection system, a flow velocity detection system and a display system; the pressure detection system is arranged at the inlet of the gas sample injector and used for detecting the pressure of carrier gas and giving an alarm when the pressure value of the carrier gas exceeds the allowable range of the pressure set value or is not equal to the pressure set value; the flow rate detection system is arranged in a flow stabilizing pipe at the inlet of the gas sample injector and used for detecting the flow rate of the carrier gas and giving an alarm when the flow rate value of the carrier gas exceeds the allowable range of the flow rate set value or is not equal to the flow rate set value, so that the carrier gas exceeding the range of the pressure or the flow rate set value or not equal to the pressure or the flow rate set value is prevented from entering the gas sample injector, the quality of the carrier gas entering the gas sample injector is improved, and the detection precision of the sample gas is improved under the condition that the quality.
The display system is connected with the pressure detection system and the flow velocity detection system and dynamically displays the response curve of the carrier gas pressure value and the response curve of the carrier gas flow rate value and the carrier gas flow rate value, so that detection personnel can observe and analyze the pressure and the flow rate of the carrier gas conveniently, the pressure and the flow rate of the carrier gas are further monitored, and the quality of the carrier gas is conveniently controlled and adjusted.
The pressure detection system comprises an XGZP6847 type pressure transmitter module, a pressure signal processing module 1 and an alarm module.
The XGZP6847 type pressure transmitter module is arranged at an inlet of the gas sample injector and used for detecting the pressure of carrier gas at the inlet of the gas sample injector and outputting a pressure detection signal;
the pressure signal processing module 1 is connected to the XGZP6847 type pressure transmitter module and is configured to receive the pressure detection signal and process the pressure detection signal. The pressure signal processing module 1 includes a first pressure signal processing module and a second pressure signal processing module.
The first pressure signal processing module comprises a first pressure set value unit and a first comparator D1, the first pressure set value unit comprises a first voltage dividing resistor R10 and a first slide rheostat R11 which are connected in series with a control power supply VCC, one end of the first slide rheostat R11 is grounded, and the position of a slide sheet of the first slide rheostat R11 is moved to set different first pressure set values; the non-inverting input end of a first comparator D1 is connected with the XGZP6847 type pressure transmitter module, the inverting input end of the first comparator D1 is connected with a first divider resistor R10, and a pressure driving signal is output when a pressure detection value is larger than a first pressure set value;
the second pressure signal processing module comprises a second pressure set value unit and a second comparator D2, the second pressure set value unit comprises a second voltage dividing resistor R20 and a second slide rheostat R21 which are connected in series with a control power supply VCC, one end of the first slide rheostat R21 is grounded, the slide position of the second slide rheostat R21 is moved to set a second pressure set value, and the second pressure set value is smaller than or equal to the first pressure set value; the non-inverting input terminal of the second comparator D2 is connected to the second voltage divider resistor R0, and the inverting input terminal thereof is connected to the XGZP6847 type pressure transmitter module, and outputs a pressure drive signal when the pressure detection value is smaller than the second pressure setting value.
The pressure alarm module 2 comprises a first current limiting resistor R3, a first pull-down resistor R4, a first triode Q1 and a first buzzer BEEP1, wherein the first current limiting resistor R3 is connected in series with the pressure signal processing module 1 and the base electrode of the first triode Q1; one end of the first pull-down resistor R4 is connected to the base of the first triode Q1, and the other end is grounded; the collector of the first triode Q1 is connected with one end of the first buzzer BEEP1, and the emitter is grounded; one end of the first buzzer BEEP1 is connected to the collector of the first transistor Q1, and the other end is connected to the control power VCC. When the pressure alarm module 2 receives the pressure driving signal, the first triode Q1 is conducted, the first buzzer BEEP1 gives an alarm, and then detection personnel are reminded to take measures in time, and the carrier gas of which the pressure does not meet the detection requirement is prevented from entering the gas sample injector, so that the detection effect of the sample gas is prevented from being influenced.
The flow velocity detection system comprises a vortex shedding flowmeter, a flow velocity detection module, a flow velocity signal processing module 3 and a flow velocity alarm module 4;
the vortex flow meter is arranged in the flow stabilizing pipe at the inlet of the gas sample injector and is used for detecting the flow rate of the carrier gas in the flow stabilizing pipe and outputting flow rate detection signals;
the flow velocity signal processing module 3 is connected to the vortex shedding flowmeter and used for receiving the flow velocity detection signal and processing the flow velocity detection signal. The flow rate signal processing module 3 comprises a first flow rate signal processing module and a second flow rate signal processing module.
The first flow rate signal processing module comprises a first flow rate set value unit and a third comparator D3, the first flow rate set value unit comprises a third voltage dividing resistor R50 and a third slide rheostat R51 which are connected in series with a control power supply VCC, one end of the third slide rheostat R51 is grounded, and the slide position of the third slide rheostat R51 is moved to set a first flow rate set value; the non-inverting input end of the third comparator D3 is connected with the vortex shedding flowmeter, the inverting input end of the third comparator D3 is connected with the third voltage-dividing resistor R50, and when the flow rate detection value is larger than the first flow rate set value, a flow rate driving signal is output;
the second flow rate signal processing module comprises a second flow rate set value unit and a fourth comparator D4, the second flow rate set value unit comprises a fourth voltage dividing resistor R60 and a fourth slide rheostat R61 which are connected in series with a control power supply VCC, one end of the fourth slide rheostat R61 is grounded, the slide position of the fourth slide rheostat R41 is moved to set a second flow rate set value, and the second flow rate set value is smaller than or equal to the first flow rate set value; the non-inverting input end of the fourth comparator D4 is connected to the fourth voltage-dividing resistor R60, the inverting input end is connected to the vortex shedding flowmeter, and when the flow rate detection value is smaller than the second flow rate set value, a flow rate driving signal is output.
The flow rate alarm module 4 comprises a second current-limiting resistor R7, a first pull-down resistor R8, a first triode Q1 and a first buzzer BEEP1, wherein the first current-limiting resistor R7 is connected in series with the flow rate signal processing module 3 and the base of the first triode Q1; one end of the first pull-down resistor R8 is connected to the base of the first triode Q1, and the other end is grounded; the collector of the first triode Q1 is connected with one end of the first buzzer BEEP1, and the emitter is grounded; one end of the first buzzer BEEP1 is connected to the collector of the first transistor Q1, and the other end is connected to the control power VCC. When flow rate alarm module 4 received the velocity of flow drive signal, first triode Q1 switched on, and first buzzer BEEP1 sends the warning, and then reminds detection personnel in time to take measures, prevents that the velocity of flow from not meeting the carrier gas entering gas sample injector that the detection requirement stipulated, influences the detection effect of appearance gas.
The display system comprises a first ADC0809 chip, a second ADC0809 chip, an STC89C52 singlechip and an LCM128645ZK type liquid crystal display; the first ADC0809 chip is connected with the XGZP6847 type pressure transmitter module and used for receiving a pressure detection signal, performing analog-to-digital conversion on the received pressure detection signal and outputting a pressure conversion signal; the second ADC0809 chip is connected with the vortex flowmeter and used for receiving the flow speed detection signal, performing analog-to-digital conversion on the received flow speed detection signal and outputting a flow speed conversion signal; the STC89C52 single chip microcomputer is connected with the first ADC0809 chip and the second ADC0809 chip and is used for receiving the pressure conversion signal and the flow rate conversion signal and outputting a pressure display driving signal or a flow rate display driving signal when receiving the pressure conversion signal or the flow rate conversion signal; the LCM128645ZK type liquid crystal display is connected with the STC89C52 single chip microcomputer and is used for receiving the pressure display driving signal and the flow rate display driving signal and dynamically displaying the carrier gas pressure value and the carrier gas pressure value response curve as well as the carrier gas flow rate value and the carrier gas flow rate value response curve after receiving the pressure display driving signal or the flow rate driving signal, so that detection personnel can observe and analyze the pressure and the flow rate of the carrier gas conveniently, the pressure and the flow rate of the carrier gas are further monitored, and the quality of the carrier gas is conveniently controlled and adjusted.
As can be seen from the above, the XGZP6847 type pressure transmitter module detects the carrier gas pressure at the inlet of the gas injector and outputs a pressure detection signal, the comparator D1 compares the pressure detection value with the first pressure setting value, the second comparator D2 compares the pressure detection value with the second pressure setting value, when the pressure detection value exceeds the pressure setting value range or is not equal to the pressure setting value, the first triode Q1 is turned on, and the first buzzer BEEP1 gives an alarm; the vortex flow meter detects the flow rate of the carrier gas at the inlet of the gas sample injector and outputs a flow rate detection signal, the third comparator D3 compares the flow rate detection value with a first flow rate set value, the fourth comparator D4 compares the flow rate detection value with a second flow rate set value, when the flow rate detection value exceeds the flow rate set value range or is not equal to the flow rate set value, the second triode Q2 is conducted, and the second buzzer BEEP2 gives an alarm; in addition, the first ADC0809 chip performs analog-to-digital conversion on the received pressure detection signal and outputs a pressure conversion signal, the second ADC0809 chip performs analog-to-digital conversion on the received flow rate detection signal and outputs a flow rate conversion signal, the STC89C52 single chip receives the pressure conversion signal or the flow rate conversion signal and then outputs a pressure display driving signal or a flow rate display driving signal, and the LCM128645ZK type liquid crystal display dynamically displays a carrier gas pressure value and carrier gas pressure value response curve and a carrier gas flow rate value and carrier gas flow rate value response curve after receiving the pressure display driving signal or the flow rate driving signal.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a many carry gas sample injectors of wisdom control, includes gas sample injector body, its characterized in that: the device also comprises a carrier gas detection display system; the carrier gas detection system comprises a pressure detection system, a flow rate detection system and a display system;
the pressure detection system is arranged at the inlet of the gas sample injector and used for detecting the pressure of carrier gas and giving an alarm when the pressure detection value exceeds the allowable range of the pressure set value or is not equal to the pressure set value;
the flow velocity detection system is arranged in a flow stabilizing pipe at the inlet of the gas sample injector and is used for detecting the flow velocity of the carrier gas and giving an alarm when the flow velocity detection value exceeds the allowable range of the flow velocity set value or is not equal to the flow velocity set value;
the display system is connected with the carrier gas pressure detection system and the carrier gas flow rate system and is used for displaying a carrier gas pressure value and carrier gas pressure value response curve and a carrier gas flow rate value and carrier gas flow rate value response curve.
2. The apparatus of claim 1, wherein the apparatus further comprises: the pressure detection system comprises a pressure detection module, a pressure signal processing module (1) and a pressure alarm module (2);
the pressure detection module is arranged at the inlet of the gas sample injector and used for detecting the pressure of carrier gas at the inlet of the gas sample injector and outputting a pressure detection signal;
the pressure signal processing module (1) is connected with the pressure detection module and is used for receiving and processing the pressure detection signal, and outputting a pressure driving signal when the pressure detection value exceeds the allowable range of the pressure set value or is not equal to the pressure set value;
the pressure alarm module (2) is connected to the pressure signal processing module (1) and is used for receiving the pressure driving signal and outputting a pressure alarm signal when receiving the pressure driving signal;
the pressure detection module is set as an XGZP6847 type pressure transmitter module.
3. The apparatus of claim 2, wherein the apparatus further comprises: the pressure signal processing module (1) comprises a first pressure set value unit, a first comparator, a second pressure set value unit and a second comparator;
the first pressure set value unit is used for setting a first pressure set value and outputting a first pressure set value signal;
the non-inverting input end of the first comparator is connected with the pressure detection module, the inverting input end of the first comparator is connected with the first pressure set value unit and used for receiving the pressure detection signal and the first pressure set value signal, comparing the pressure detection value with the first pressure set value and outputting a pressure driving signal when the pressure detection value is larger than the first pressure set value;
the second pressure set value unit is used for setting a second pressure set value and outputting a second pressure set value signal, and the second pressure set value is smaller than or equal to the first pressure set value according to the detection requirement;
the non-inverting input end of the second comparator is connected to the second pressure set value unit, the inverting input end of the second comparator is connected to the pressure detection module and used for receiving the pressure detection signal and the second pressure set value signal, comparing the pressure detection value with the second pressure set value, and outputting a pressure driving signal when the pressure detection value is smaller than the second pressure set value.
4. The apparatus of claim 2, wherein the apparatus further comprises: the pressure alarm module (2) comprises a first current limiting resistor, a first pull-down resistor, a first triode and a first buzzer; the first current limiting resistor is connected in series with the pressure signal processing module (1) and the base electrode of the first triode; one end of the first pull-down resistor is connected to the base electrode of the first triode, and the other end of the first pull-down resistor is grounded; the collector of the first triode is connected to one end of the first buzzer, and the emitter of the first triode is grounded; one end of the first buzzer is connected to the collector of the first triode, and the other end of the first buzzer is connected to the control power supply.
5. The apparatus of claim 1, wherein the apparatus further comprises: the flow velocity detection system comprises a flow velocity detection module, a flow velocity signal processing module (3) and a flow velocity alarm module (4);
the flow velocity detection module is arranged in a flow stabilizing pipe at the inlet of the gas sample injector and is used for detecting the flow velocity of the carrier gas in the flow stabilizing pipe and outputting flow velocity detection signals;
the flow rate signal processing module (3) is connected with the signal detection module and is used for receiving the flow rate detection signal and processing the flow rate detection signal, and outputting a flow rate driving signal when the flow rate detection value exceeds the allowable range of a flow rate set value or is not equal to the flow rate set value;
and the flow rate alarm module (4) is connected to the flow rate signal processing module (3) and is used for receiving the flow rate driving signal and giving an alarm when receiving the flow rate driving signal.
6. The apparatus of claim 5, wherein the apparatus further comprises: the flow velocity detection module is set as a vortex shedding flowmeter.
7. The apparatus of claim 5, wherein the apparatus further comprises: the flow rate signal processing module (3) comprises a first flow rate set value unit, a third comparator, a second flow rate set value unit and a fourth comparator;
the first flow rate set value unit is used for setting a first flow rate set value and outputting a first flow rate set value signal;
the non-inverting input end of the third comparator is connected with the flow rate detection module, the inverting input end of the third comparator is connected with the first flow rate set value unit and used for receiving the flow rate detection signal and the first flow rate set value signal, comparing the flow rate detection value with the first flow rate set value and outputting a flow rate driving signal when the flow rate detection value is larger than the first flow rate set value;
the second flow rate set value unit is used for setting a second flow rate set value and outputting a second flow rate set value signal, and the second flow rate set value is smaller than or equal to the first flow rate set value according to the detection requirement;
and the non-inverting input end of the fourth comparator is connected with the second flow rate set value unit, the inverting input end of the fourth comparator is connected with the flow rate detection module and is used for receiving the flow rate detection signal and the second flow rate set value signal, comparing the flow rate detection value with the second flow rate set value, and outputting a flow rate driving signal when the flow rate detection value is smaller than the second flow rate set value.
8. The apparatus of claim 5, wherein the apparatus further comprises: the flow rate alarm module (4) comprises a second current limiting resistor, a second pull-down resistor, a second triode and a second buzzer; the second current limiting resistor is connected in series with the flow rate signal processing module and the base of the second triode; one end of the second pull-down resistor is connected to the base electrode of the second triode, and the other end of the second pull-down resistor is grounded; the collector of the second triode is connected to one end of the second buzzer, and the emitter of the second triode is grounded; one end of the second buzzer is connected to the collector of the second triode, and the other end of the second buzzer is connected to the control power supply.
9. The apparatus of claim 1, wherein the apparatus further comprises: the display system comprises a first ADC0809 chip, a second ADC0809 chip, an STC89C52 singlechip and an LCM128645ZK type liquid crystal display;
the first ADC0809 chip is connected to the pressure detection system and used for receiving the carrier gas pressure signal, performing analog-to-digital conversion on the received carrier gas pressure signal and outputting a pressure conversion signal;
the second ADC0809 chip is connected with the flow rate detection system and used for receiving the carrier gas flow rate signals, performing analog-to-digital conversion on the received carrier gas flow rate signals and outputting flow rate conversion signals;
the STC89C52 single chip microcomputer is connected with the first ADC0809 chip and the second ADC0809 chip and is used for receiving the pressure conversion signal and the flow rate conversion signal and outputting a pressure display driving signal or a flow rate display driving signal when receiving the pressure conversion signal or the flow rate conversion signal;
the LCM128645ZK type LCD is connected with the controller and is used for receiving the pressure display driving signal and the flow rate display driving signal and dynamically displaying the response curve of the carrier gas pressure value and the response curve of the carrier gas flow rate value and the carrier gas flow rate value after receiving the pressure display driving signal or the flow rate driving signal.
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Effective date of registration: 20230802 Address after: Floor 1, No. 103, Building 6, Yungu Science and Technology Park, Matang Street, Yijiang District, Wuhu City, Anhui Province, 241000 Patentee after: Anhui Honglu Testing Technology Co.,Ltd. Address before: Room 201, Building A1, South Science and Technology Park, No. 129-3 Guanghua Road, Qinhuai District, Nanjing City, Jiangsu Province, 210000 Patentee before: NANJING KEJIE ANALYTICAL INSTRUMENT Co.,Ltd. |