A kind of suction-type hyperchannel nitrogen hydrogen leakage detection apparatus
Technical field
The utility model relates to the minute leakage checkout equipment, particularly a kind of suction-type hyperchannel nitrogen hydrogen leakage detection apparatus.
Background technology
At present nitrogen hydrogen leak locator all is the single pass detection of unit, can only detect a workpiece and a leakage point simultaneously, if many leak locators of needs could satisfy the detection efficiency requirement when using in big place such as production line of output.Single channel exists deficiencies such as automaticity is low, efficient is low, if raise the efficiency and will its cost significantly be improved by increasing leak locator platform number.
Suction-type hyperchannel nitrogen hydrogen leakage detection apparatus utilizes a plurality of nitrogen hydrogen of computing machine centralized control leak detection module, makes it can detect a plurality of leak sources that a lot of workpiece or one-time detection can be found a workpiece simultaneously, has also significantly reduced cost when raising the efficiency.
The utility model content
The purpose of this utility model is at above-mentioned existing problems, a kind of suction-type hyperchannel nitrogen hydrogen leakage detection apparatus is provided, this device can be realized the leak detection of hyperchannel nitrogen hydrogen, improve degree and detection efficiency that production line automation detects, reduce equipment cost, be connected with the production management infosystem and be beneficial to data statistics, analysis, file.
The technical solution of the utility model:
A kind of suction-type hyperchannel nitrogen hydrogen leakage detection apparatus, suction gun by computing machine, I/O port link block, traffic sampling module, flow adjusting module and each passage is formed, and computing machine is connected with the traffic sampling module with I/O port link block respectively by cable; The flow adjusting module comprises the electromagnetic pump that produces the negative suction source of the gas and the needle valve of regulating flow, is connected with the gas channels of each suction gun in the traffic sampling module by gas circuit; The traffic sampling module comprises flow sensor and the Signals Transfer Board a of each passage, and the flow sensor of each passage is sent to computing machine by Signals Transfer Board a in real time with flow signal; Suction gun each passage of corresponding detection also is arranged on from the leakage of the nearest position sensing hydrogen of measured workpiece, suction gun inside is respectively equipped with hydrogen gas sensor, hydrogen gas sensor is connected with the traffic sampling module by gas path pipe, and hydrogen gas sensor is connected with computing machine through Signals Transfer Board b by lead; The hydrogen gas sensor signal of each passage suction gun inside of computer acquisition also calculates the leakage rate of each passage, shows, preserves test result, and the real-time status signal in the testing process is issued I/O port link block export.
Working routine of the present utility model:
1) fill nitrogen hydrogen mixing spike gas simultaneously at first for a plurality of measured workpieces, the suction gun of each passage and the module of respectively hunting leak are opened simultaneously;
2) computer real-time is sampled to the hydrogen gas sensor of suction gun inside, and according to the flow of the fixedly suction of each passage, each workpiece leaks different, then is inhaled into and produces different density of hydrogen when mixing spike gas, calculates leakage rate according to variable concentrations;
4) can be used for detecting a plurality of workpiece during the suction-type multi-channel detection, detect each passage and whether qualified judge separately, also can be used for detecting the different leak positions of same workpiece.
The utility model has the advantages that: adopt computing machine to make master controller, except carrying out the supercomputing multichannel leak detection data, also attached rich functions, demonstration, mass data library storage, data/graphic analyses, form/printout in the time of as the various data of hyperchannel can send real-time production data to the production management infosystem at a distance by network connection simultaneously and manage concentratedly.
Description of drawings
Fig. 1 is suction-type hyperchannel nitrogen hydrogen leakage detection apparatus schematic flow sheet, solid line indication circuit wherein, and dotted line is represented gas circuit.
Fig. 2 forms synoptic diagram for the traffic sampling module.
Fig. 3 forms synoptic diagram for the flow adjusting module.
Fig. 4 is the suction gun synoptic diagram.
Among the figure: 1. computing machine 2.I/O port link block 3. traffic sampling modules 4. flow adjusting module 5-I-X VI. suction gun 6. flow sensors 7. Signals Transfer Board a 8. needle valves of each passage
9. electromagnetic pump 10. hydrogen gas sensors 11. Signals Transfer Board b
Embodiment
Embodiment:
A kind of suction-type hyperchannel nitrogen hydrogen leakage detection apparatus, suction gun 55-I-X VI by computing machine 1, I/O port link block 2, traffic sampling module 3, flow adjusting module 4 and each passage is formed, and computing machine 1 is connected with traffic sampling module 3 with I/O port link block 2 respectively by cable; Flow adjusting module 4 comprises the electromagnetic pump 9 that produces the negative suction source of the gas and the needle valve 8 of regulating flow, is connected with the gas channels of each suction gun 5-I-X VI in the traffic sampling module 3 by gas circuit; Traffic sampling module 3 comprises flow sensor 6 and the Signals Transfer Board a7 of each passage, and the flow sensor 6 of each passage is sent to computing machine 1 by Signals Transfer Board a7 in real time with flow signal; Suction gun 5-I-X VI each passage of corresponding detection also is arranged on from the leakage of the nearest position sensing hydrogen of measured workpiece, suction gun 5-I-X VI inside is respectively equipped with hydrogen gas sensor 10, hydrogen gas sensor 10 is connected with traffic sampling module 3 by gas path pipe, and hydrogen gas sensor 10 is connected with computing machine 1 through Signals Transfer Board b11 by lead; Computing machine 1 is gathered hydrogen gas sensor 10 signals of each passage suction gun 5-I-X VI inside and is calculated the leakage rate of each passage, shows, preserves test result, and the real-time status signal in the testing process is issued I/O port link block 2 export.
Among this embodiment, computing machine is selected industrial computer for use; The model of I/O port link block is FB-8001; The model of suction gun is HA-02; The model of flow sensor is the BFU laminar flow flowmeter; The model of Signals Transfer Board is AD sampling module FB-8002; The flow of needle valve is 0-100mL/min; The pressure of electromagnetic pump is-more than the 50kPa; The density of hydrogen sensing range of hydrogen gas sensor is 0.5-1000ppm.
Detection method of the present utility model:
Using the suction-type suction gun, needing to adjust in advance needle valve, each passage is accessed a fixedly inhalation flow, the hydrogen gas sensor of 1 pair of suction gun inside of simultaneous computer is sampled, and reads the inlet flow value of each passage in the flow sampling module.
Start suction-type hyperchannel nitrogen hydrogen leakage detection apparatus and begin test, computer real-time is sampled to the hydrogen gas sensor of the suction gun inside of each passage, detect density of hydrogen, to calculate the leakage rate of each passage, show end value, be saved in database, and order I/O port link block is exported the signal of corresponding certified products/unacceptable product.
I/O port link block can connect to form automatic detection system with user's PLC, output signal is provided and does corresponding operating according to the input signal of PLC to PLC, and I/O port link block is subjected to computing machine 1 control.
Traffic sampling module in the suction-type hyperchannel nitrogen hydrogen leakage detection apparatus is responsible for the inhalation flow of each passage is sampled, and reads for computer real-time; The flow adjusting module produces the negative pressure source of the gas that sucks by electromagnetic pump, and needle valve is adjusted a firm discharge to respective channel.
Corresponding each passage that detects of suction gun is placed in from the leakage of the nearest position sensing hydrogen of measured workpiece, and computer real-time is sampled to the hydrogen gas sensor of suction gun inside, detects density of hydrogen to calculate leakage rate.The number of suction gun is not limited to 16, can expand according to the actual needs at scene.