CN105424542A - Calibrating method used for fire extinguishing agent concentration measuring system - Google Patents
Calibrating method used for fire extinguishing agent concentration measuring system Download PDFInfo
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- CN105424542A CN105424542A CN201510742690.2A CN201510742690A CN105424542A CN 105424542 A CN105424542 A CN 105424542A CN 201510742690 A CN201510742690 A CN 201510742690A CN 105424542 A CN105424542 A CN 105424542A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
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Abstract
The invention relates to the fire extinguishing agent concentration measuring technology, in particular to a calibrating method used for a fire extinguishing agent concentration measuring system. The problem that an existing fire extinguishing agent concentration measuring system is low in calibration accuracy is solved. The method includes the following steps of closing an outlet valve of a standard gas cylinder with preset concentration, and vacuumizing a standard gas pressure control tank; opening the outlet valve of the standard gas cylinder, so that the standard gas pressure control tank is filled with standard gas and reaches a preset pressure value; measuring concentration values of a plurality of measuring channels in a calibration device connected with the fire extinguishing agent concentration measuring system through the fire extinguishing agent concentration measuring system; comparing the measured concentration values of the measuring channels with the preset concentration. By means of the method, the concentration values of the measuring channels in the calibrating device connected with the fire extinguishing agent concentration measuring system can be synchronously measured, synchronous calibration is achieved, and therefore calibration efficiency is improved, cost is saved, and the calibration accuracy of the fire extinguishing agent concentration measuring system is improved.
Description
Technical field
The present invention relates to agent concentration measuring technique, particularly a kind of scaling method for agent concentration measuring system;
Background technology
According to the fire extinguishing system testing requirements of aircraft power cabin, need during test to adopt the multiple measurement points (by multiple Measurement channel connected) of special agent concentration measuring system to piggyback pod to carry out the Measurement accuracy of agent concentration, to determine the extinguishing effect of fire extinguishing system.
Further, be validity and the accuracy of warranty test data, require before test to demarcate special agent concentration measuring system.The demarcation of agent concentration measuring equipment is measured multiple passage by the Standard Gases of multiple concentration point, then adopt the method for modified computing formulae to carry out.But in current scaling method, the synchronism that multiple Measurement channel is demarcated is difficult to ensure, demarcation efficiency is low, and cost is high, and affects special agent concentration measuring system stated accuracy.
Summary of the invention
Object of the present invention provides a kind of scaling method for agent concentration measuring system, to solve the low problem of existing agent concentration measuring system stated accuracy.
Technical scheme of the present invention:
For a scaling method for agent concentration measuring system, comprise the steps:
Step one, closedown have the outlet valve of the calibrating gas bottle of predetermined concentration, the Standard Gases Stress control tank in the caliberating device be connected are vacuumized with described calibrating gas bottle;
Step 2, open the outlet valve of described calibrating gas bottle, make Standard Gases be full of described Standard Gases Stress control tank, and reach scheduled pressure value;
Step 3, to be measured by the concentration value of described agent concentration measuring system to the multiple Measurement channel in coupled described caliberating device;
Step 4, carry out contrast according to the concentration value obtained multiple Measurement channel measurement and described predetermined concentration and process, complete the demarcation of the described agent concentration measuring system under described predetermined concentration.
Optionally, the described scaling method for agent concentration measuring system also comprises:
Step 5, close the outlet valve of described calibrating gas bottle, again described Standard Gases Stress control tank is vacuumized;
Step 6, change the calibrating gas bottle of other predetermined concentrations, repeat step one to step 4, complete the demarcation of the described agent concentration measuring system under other predetermined concentrations described.
Optionally, in described step one, be by the vacuum pump in described agent concentration measuring system, described Standard Gases Stress control tank is vacuumized.
Optionally, in described step 3, the vacuum pump in described agent concentration measuring system is in opening, and the Standard Gases extracted in described Standard Gases Stress control tank by described vacuum pump is measured.
Optionally, comprise in described step 2:
First carry out coarse adjustment by the force value of reduction valve to the Standard Gases entering described Standard Gases Stress control tank, then carry out fine tuning by micrometering valve.
Optionally, in described step 3, the Standard Gases divider in described caliberating device has the measurement that multiple and described Measurement channel quantity matches and export, multiplely describedly measure the endpiece that outlet is evenly distributed on described Standard Gases divider.
Optionally, the quantity of the Measurement channel in described caliberating device is 12.
Optionally, in described step 4, be the force value first gathered by the data acquisition system (DAS) in described agent concentration measuring system in described multiple Measurement channel, then calculate the concentration value of described multiple Measurement channel according to described force value.
Invention effect:
Scaling method for agent concentration measuring system of the present invention, agent concentration measuring system can carry out synchro measure to the concentration value of the multiple Measurement channel in coupled caliberating device, realize synchronous demarcation, thus improve demarcation efficiency, cost-saving, and improve the stated accuracy of agent concentration measuring system.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of invention for the scaling method of agent concentration measuring system;
Fig. 2 is the structural representation of invention for agent concentration measuring system;
Fig. 3 is the structural representation of invention for caliberating device in agent concentration measuring system.
Embodiment
As shown in Figure 1 to Figure 3, the invention provides a kind of scaling method for agent concentration measuring system, comprise the steps:
Step S101, close there is the outlet valve of the calibrating gas bottle 1 of predetermined concentration, the Standard Gases Stress control tank 23 in the caliberating device 2 be connected with calibrating gas bottle 1 is vacuumized.
The outlet valve of step S102, unlatching calibrating gas bottle 1, makes Standard Gases be full of Standard Gases Stress control tank 23, and reaches scheduled pressure value.
Step S103, to be measured by the concentration value of agent concentration measuring system 3 to the multiple Measurement channel in coupled caliberating device 2.
Step S104, carry out contrast according to the concentration value obtained multiple Measurement channel measurement and predetermined concentration and process, complete the demarcation of the agent concentration measuring system 3 under predetermined concentration.
Scaling method for agent concentration measuring system of the present invention, agent concentration measuring system 3 can carry out synchro measure to the concentration value of the multiple Measurement channel in coupled caliberating device 2, realize synchronous demarcation, thus improve demarcation efficiency, cost-saving, and improve the stated accuracy of agent concentration measuring system.
In scaling method for agent concentration measuring system of the present invention, whole calibration system as shown in Figure 2, can comprise calibrating gas bottle 1, caliberating device 2 and agent concentration measuring system 3.Further, caliberating device 2 again as shown in Figure 3, can comprise the reduction valve 21, micrometering valve 22, Standard Gases Stress control tank 23, outlet valve 24 and the Standard Gases divider 25 that are connected successively by pipeline, wherein, reduction valve 21 entrance is by pipeline and calibrating gas bottle 1 outlet; Also be provided with pressure transducer 27 at Standard Gases Stress control tank 23, control tank 23 internal pressure for examination criteria atmospheric pressure.
In addition, Standard Gases divider 25 has multiple measurement matched with Measurement channel quantity and export 26, multiple measurement outlets 26 are evenly distributed on the endpiece of Standard Gases divider 25, and the concentration that each can be made to measure outlet 26 end is more even; Multiple measurement outlet 26 is communicated with the air flow inlet in agent concentration measuring system 3 simultaneously; In the present embodiment, the quantity preferably measuring outlet 26 is 12 (namely Measurement channel is also 12), to meet the requirement of current agent concentration measuring system to the measurement point quantity of piggyback pod.
Scaling method for agent concentration measuring system of the present invention can also comprise:
The outlet valve of step S105, standard of closure gas cylinder 1, vacuumizes Standard Gases Stress control tank 23 again.
Step S106, change the calibrating gas bottle 1 of other predetermined concentrations, repeat step one to step 4, complete the demarcation of the agent concentration measuring system 3 under other predetermined concentrations (can comprise multiple, can carry out being applicable to selecting according to test demand).
Further, in the step one of the scaling method for agent concentration measuring system of the present invention, process can be vacuumized by multiple applicable mode to Standard Gases Stress control tank 23; In the present embodiment, adopt the vacuum pump in agent concentration measuring system 3, vacuumized by multiple measurement outlets 26 of being connected with agent concentration measuring system 3 air flow inlet, Standard Gases divider 25 pairs of Standard Gases Stress control tanks 23, make whole calibration system structure simple, easy and simple to handle, and cost-saving.
In the step S103 of the scaling method for agent concentration measuring system of the present invention, Standard Gases can be made to enter into agent concentration measuring system 3 by means of only the effect of calibrating gas bottle 1 Plays atmospheric pressure; In the present embodiment, the vacuum pump in the agent concentration measuring system 3 in previous step S102 is still in opening, and Standard Gases draw standard atmospheric pressure can being assisted to control in tank 23 by vacuum pump is measured, thus improves measurement efficiency.
In the step S102 of the scaling method for agent concentration measuring system of the present invention, first coarse adjustment is carried out by the force value of the Standard Gases of reduction valve 21 pairs of Engage of standard atmospheric pressures control tanks 23, be adjusted to P1 force value (in actual tests test sample environment, atmospheric pressure is P0, P1 < P0); Carry out fine tuning by micrometering valve 22 pairs of force value again, be adjusted to P0; The method accurately can control the force value of tank 23 Plays gas by control criterion atmospheric pressure.
In in the step S104 of the scaling method for agent concentration measuring system of the present invention, it is the force value first gathered by the data acquisition system (DAS) in agent concentration measuring system 3 in multiple Measurement channel, the concentration value that (passing through empirical formulas) obtains multiple Measurement channel is calculated again according to force value, computation process can complete in data acquisition system (DAS), repeats no more; Finally more groups measured value of all passages is compared with Standard Gases concentration, matching is again carried out to the computing formula of the passage exceeding accuracy requirement and upgrades in software and solidify.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (8)
1. for a scaling method for agent concentration measuring system, it is characterized in that, comprise the steps:
Step one, closedown have the outlet valve of the calibrating gas bottle of predetermined concentration, the Standard Gases Stress control tank in the caliberating device be connected are vacuumized with described calibrating gas bottle;
Step 2, open the outlet valve of described calibrating gas bottle, make Standard Gases be full of described Standard Gases Stress control tank, and reach scheduled pressure value;
Step 3, to be measured by the concentration value of described agent concentration measuring system to the multiple Measurement channel in coupled described caliberating device;
Step 4, carry out contrast according to the concentration value obtained multiple Measurement channel measurement and described predetermined concentration and process, complete the demarcation of the described agent concentration measuring system under described predetermined concentration.
2. the scaling method for agent concentration measuring system according to claim 1, is characterized in that, also comprise:
Step 5, close the outlet valve of described calibrating gas bottle, again described Standard Gases Stress control tank is vacuumized;
Step 6, change the calibrating gas bottle of other predetermined concentrations, repeat step one to step 4, complete the demarcation of the described agent concentration measuring system under other predetermined concentrations described.
3. the scaling method for agent concentration measuring system according to claim 1 and 2, is characterized in that, in described step one, is vacuumized by described Standard Gases Stress control tank by the vacuum pump in described agent concentration measuring system.
4. the scaling method for agent concentration measuring system according to claim 3, it is characterized in that, in described step 3, vacuum pump in described agent concentration measuring system is in opening, and the Standard Gases extracted in described Standard Gases Stress control tank by described vacuum pump is measured.
5. the scaling method for agent concentration measuring system according to claim 3, is characterized in that, comprises in described step 2:
First carry out coarse adjustment by the force value of reduction valve to the Standard Gases entering described Standard Gases Stress control tank, then carry out fine tuning by micrometering valve.
6. the scaling method for agent concentration measuring system according to claim 3, it is characterized in that, in described step 3, Standard Gases divider in described caliberating device has the measurement that multiple and described Measurement channel quantity matches to export, multiplely describedly measure the endpiece that outlet is evenly distributed on described Standard Gases divider.
7. the scaling method for agent concentration measuring system according to claim 6, is characterized in that, the quantity of the Measurement channel in described caliberating device is 12.
8. the scaling method for agent concentration measuring system according to claim 3, it is characterized in that, in described step 4, be the force value first gathered by the data acquisition system (DAS) in described agent concentration measuring system in described multiple Measurement channel, then calculate the concentration value of described multiple Measurement channel according to described force value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510742690.2A CN105424542A (en) | 2015-11-04 | 2015-11-04 | Calibrating method used for fire extinguishing agent concentration measuring system |
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| CN201510742690.2A CN105424542A (en) | 2015-11-04 | 2015-11-04 | Calibrating method used for fire extinguishing agent concentration measuring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927346A (en) * | 2019-12-24 | 2020-03-27 | 中国航空工业集团公司西安飞机设计研究所 | Gas concentration test system calibration method and device |
| CN111665332A (en) * | 2020-07-07 | 2020-09-15 | 中国商用飞机有限责任公司 | Calibration device and calibration method of gas extinguishing agent concentration test equipment |
| CN112255138A (en) * | 2020-10-16 | 2021-01-22 | 中国直升机设计研究所 | Special fire extinguishing agent concentration measurement system inspection and maintenance method |
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| CN204287149U (en) * | 2014-12-10 | 2015-04-22 | 中国第一汽车股份有限公司 | A kind of simulated exhaust pipe device that can be used for NOX sensor test |
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| EP0047049A1 (en) * | 1980-08-28 | 1982-03-10 | The Babcock & Wilcox Company | Opacity monitoring apparatus |
| EP0345563A2 (en) * | 1988-06-04 | 1989-12-13 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. | Apparatus for the automatic calibration of gas sensors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110927346A (en) * | 2019-12-24 | 2020-03-27 | 中国航空工业集团公司西安飞机设计研究所 | Gas concentration test system calibration method and device |
| CN110927346B (en) * | 2019-12-24 | 2022-07-19 | 中国航空工业集团公司西安飞机设计研究所 | Gas concentration test system calibration method and device |
| CN111665332A (en) * | 2020-07-07 | 2020-09-15 | 中国商用飞机有限责任公司 | Calibration device and calibration method of gas extinguishing agent concentration test equipment |
| CN111665332B (en) * | 2020-07-07 | 2021-07-06 | 中国商用飞机有限责任公司 | Calibration device and calibration method of gas extinguishing agent concentration test equipment |
| CN112255138A (en) * | 2020-10-16 | 2021-01-22 | 中国直升机设计研究所 | Special fire extinguishing agent concentration measurement system inspection and maintenance method |
| CN112255138B (en) * | 2020-10-16 | 2023-12-29 | 中国直升机设计研究所 | Inspection and maintenance method for special fire extinguishing agent concentration measurement system |
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Application publication date: 20160323 |