CN214847086U - Quick calibration testing arrangement of portable gas detection alarm instrument - Google Patents
Quick calibration testing arrangement of portable gas detection alarm instrument Download PDFInfo
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- CN214847086U CN214847086U CN202121376205.1U CN202121376205U CN214847086U CN 214847086 U CN214847086 U CN 214847086U CN 202121376205 U CN202121376205 U CN 202121376205U CN 214847086 U CN214847086 U CN 214847086U
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Abstract
The utility model provides a quick calibration testing arrangement of portable gaseous detection alarm, including control module and a plurality of test module, test module is used for testing portable gaseous detection alarm, control module establishes the gas passage with a plurality of test gas cylinders simultaneously, the last exhaust passage who is used for exhaust waste gas that is equipped with of control module, test module passes through the hose and is connected the gas circuit with control module, gas circuit between each test module is parallelly connected, test module passes through serial ports data line and control module and establishes communication, the last buffer structure who is used for alleviating test gas impact portable gaseous detection alarm that is equipped with of test module. The device can intelligently carry out automatic calibration and test operation on a plurality of portable gas detection alarm instruments simultaneously, has high working efficiency, realizes gas buffering of the portable gas detection alarm instruments in the calibration and test processes, can avoid the impact of calibration gas on the portable gas detection alarm instruments, and reduces the influence on the calibration result.
Description
Technical Field
The utility model relates to a test technical field, concretely relates to quick calibration testing arrangement of portable gaseous detection alarm.
Background
In the production process, once leakage occurs, safety accidents are easily caused in the field of industries such as petroleum, steel, medicine, chemical engineering and the like along with toxic, harmful, flammable and explosive gases. Therefore, the gas detection equipment is required to monitor the concentration of toxic, harmful, flammable and explosive gases on site in real time. In order to ensure the accuracy and reliability of gas detection, the gas detection equipment is calibrated and tested in advance before entering a gas detection environment, and can be used after being qualified.
In order to guarantee the personal safety and production safety of enterprises, monitor combustible gas or toxic gas leaked in the production process and storage and transportation facilities, give an alarm in time, and prevent personal injury and fire and explosion accidents, a large number of portable gas detection alarm instruments are required to be equipped according to corresponding national standards. The portable gas detection alarm needs to be subjected to performance tests in the processes of initial use, later maintenance, middle-term inspection and the like, generally, standard gas with known concentration information is used for calibrating and testing the portable gas detection alarm, and whether the performance of the portable gas detection alarm meets the requirements or not is determined according to response time and precision. Traditional demarcation, test are carried out by the staff using the mark gas cover, and mark gas cover one end is connected with the gas cylinder, and the other end is connected with gaseous portable gaseous detection alarm instrument, carries out one-to-one demarcation, test, and the debugging is long, and the danger coefficient is big to parameter setting is inaccurate, and is very inconvenient on the whole.
Some solutions aimed at solving this problem have appeared in the prior art, but all have certain drawbacks. Chinese utility model patent with publication number CN209745909U discloses a sensor calibration device, which has no structure to buffer standard gas impact sensor module during the calibration process of the sensor, and can affect the accuracy of the calibration and test results of the sensor module. Chinese utility model patent with publication number CN105181901A discloses a sensor calibration device, which is characterized in that the calibration device does not have any structure to buffer the standard gas impact sensor module during the calibration process of the sensor, and the calibration and the accuracy of the test result of the sensor module can be affected. Chinese utility model patent with publication number CN 207423922U discloses an adapter is markd to two screw threads hydrogen sulfide sensor of double steps, this kind of adapter and sensor module threaded connection of maring, assembly time is long, and the operation is inconvenient.
In summary, no scheme capable of well solving the problem of quick calibration and test of the gas detection alarm exists in the prior art.
Disclosure of Invention
For overcoming the not enough of prior art, the utility model provides a quick calibration testing arrangement of portable gas detection alarm, it can carry out automatic demarcation, test operation simultaneously to a plurality of portable gas detection alarm intelligently, and work efficiency is high to realized the gas buffering to portable gas detection alarm in demarcation, the testing process, can avoid demarcating gaseous impact to it, reduce the influence to the calibration result.
For realizing the above-mentioned purpose, the utility model discloses a portable gas detection alarm's quick calibration testing arrangement, including control module and a plurality of test module, test module is used for testing portable gas detection alarm, control module establishes the gas path with a plurality of test gas cylinders simultaneously, the last exhaust passage who is used for exhaust waste gas that is equipped with of control module, test module passes through the hose and is connected the gas circuit with control module, gas circuit between each test module is parallelly connected, test module passes through serial ports data line and control module and establishes communication, the last buffer structure who is used for alleviating test gas impact portable gas detection alarm that is equipped with of test module.
Further, the test module includes the test box body, it is connected with the test box lid to rotate on the test box body, form the test chamber that is used for holding portable gaseous detection alarm in the test box body, buffer structure is including setting up the mark gas cover on the test box lid, the mark gas cover closes the gaseous detection portion of the portable gaseous detection alarm of laminating automatically under the state of test box body at the test box lid, mark gas cover receives the demarcation gas that lets in by control module and holds, form stable gaseous environment at the gaseous detection portion of portable gaseous detection alarm.
Furthermore, the standard gas cover comprises a cover body, one side of the cover body, facing the portable gas detection alarm instrument, is opened and is provided with a cavity, the cover body is provided with a gas inlet for allowing the calibrated gas to enter and a gas outlet for discharging the calibrated gas, a test two-position two-way normally closed electromagnetic valve is arranged in the test box body, and the gas inlet is connected to the test two-position two-way normally closed electromagnetic valve.
Furthermore, the control module comprises a control box, a plurality of calibration gas connectors used for connecting different calibration gases are connected to the control box, a clean gas connector used for connecting clean air is further arranged on the control box, two-stage pressure reducing valves are respectively connected to the calibration gas connectors and the clean gas connectors, and the two-stage pressure reducing valves are respectively connected to corresponding standard gas cylinders.
Furthermore, a two-position two-way normally closed electromagnetic valve for control is arranged in the control box, 3 calibration gas connectors are arranged, 3 clean gas connectors of the calibration gas connector boxes are connected to the two-position two-way normally closed electromagnetic valve for control, two control gas supply ports are arranged at the bottom of the control box, two test gas supply ports are arranged at the bottom of the test box body, and the test gas supply ports are connected with the control gas supply ports through hoses.
Furthermore, the two-position two-way normally closed electromagnetic valve box for testing and the two-position two-way normally closed electromagnetic valve for controlling are respectively provided with corresponding relays, a main control board for controlling is arranged in the control box, control software runs on the main control board, an operation panel and a display screen are arranged on the control box, and indicator lights are respectively arranged on the control box and the test box body.
Further, the number of test modules is not more than five.
Further, the specifications of the gas cylinders connected into the control module comprise 1L, 2L, 4L and 8L.
The utility model discloses a quick calibration testing arrangement of portable gas detection alarm can carry out automation simultaneously to a plurality of portable gas detection alarm and mark, test operation intelligently, and work efficiency is high to realized the gas buffering to portable gas detection alarm in demarcation, the test procedure, can avoid demarcating gaseous impact to it, reduce the influence to the calibration result.
Drawings
The invention will be further described and illustrated with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a whole fast calibration testing device of a portable gas detection alarm apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram for showing the connection relationship between a control module and a test module;
FIG. 3 is a schematic structural view for embodying the inside of the control box;
FIG. 4 is a schematic view of the structure of the open state of the test cassette cover;
FIG. 5 is a schematic structural view of a gas mask;
FIG. 6 is a schematic view of the structure of the combination of the gas marking cover and the portable gas detection alarm;
fig. 7 is a schematic structural view for showing the flow direction of the gas in the standard gas hood.
Reference numerals: 1. a control module; 11. a control box; 12. calibrating a gas joint; 13. a clean air connection; 14. A secondary pressure reducing valve; 15. a two-position two-way normally closed electromagnetic valve for control; 16. controlling the air supply port; 17. an operation panel; 18. a display screen; 19. an exhaust passage; 2. a test module; 21. testing the box body; 22. a test box cover; 23. testing an air supply port; 3. a portable gas detection alarm; 4. a gas marking cover; 41. a cover body; 42. an air inlet; 43. an air outlet; 5. a serial port data line; 6. a hose; 7. and an indicator light.
Detailed Description
The technical solution of the present invention will be more clearly and completely explained by the description of the preferred embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the utility model discloses a portable gas detection alarm 3's of preferred embodiment quick calibration testing arrangement, including control module 1 and test module 2, five test module 2 can be connected at most to control module 1, take control module 1 to connect two test module 2 as the example in this embodiment.
As shown in fig. 1 and 3, the control module 1 includes a control box 11, three calibration gas connectors 12 for accessing different calibration gases are connected to the control box 11, a clean gas connector for accessing clean air is further disposed on the control box 11, two-stage pressure reducing valves 14 are respectively connected to the calibration gas connectors 12 and the clean gas connector, and each two-stage pressure reducing valve 14 is respectively connected to a corresponding standard gas cylinder. The specifications of the gas cylinders accessed by the control box 11 include 1L, 2L, 4L and 8L. The control box 11 is also provided with an exhaust passage 19 for discharging exhaust gas.
As shown in fig. 3, a control two-position two-way normally closed solenoid valve 15 is arranged in the control box 11, 3 calibration gas connectors 12 and clean gas connectors are connected to the control two-position two-way normally closed solenoid valve 15, and two control gas supply ports 16 are arranged at the bottom of the control box 11.
As shown in fig. 2 and 4, the testing module 2 includes a testing box body 21, a testing box cover 22 is rotatably connected to the testing box body 21, a testing cavity for accommodating the portable gas detection alarm 3 is formed in the testing box body 21, two testing gas supply ports 23 are arranged at the bottom of the testing box body 21, the testing gas supply ports 23 are connected with the control gas supply port 16 through hoses 6, and gas paths between the testing modules 2 are connected in parallel.
As shown in fig. 1, a main control board for control is arranged in the control box 11, control software runs on the main control board, an operation panel 17 and a display screen 18 are arranged on the control box 11, and indicator lights 7 are respectively arranged on the control box 11 and the test box body 21. The test module 2 establishes communication with the control module 1 through the serial port data line 5.
As shown in fig. 4 and 6, the testing module 2 is provided with a buffer structure for relieving the impact of the testing gas on the portable gas detection alarm 3. Buffer structure is including setting up the gas mark cover 4 on test box lid 22, and the gas mark cover 4 closes the gaseous detection portion of portable gaseous detection alarm instrument 3 of laminating automatically under the state of test box body 21 at test box lid 22, and the gas mark cover 4 receives the calibration gas that lets in by control module 1 and holds, forms stable gaseous environment at the gaseous detection portion of portable gaseous detection alarm instrument 3.
As shown in fig. 5 and 7, the calibration gas hood 4 includes a hood body 41, one side of the hood body 41 facing the portable gas detection alarm 3 is open and has a cavity, the hood body 41 is provided with a gas inlet 42 for the entry of calibration gas and a gas outlet 43 for the discharge of calibration gas, a test two-position two-way normally closed solenoid valve is provided in the test box body 21, and the gas inlet 42 is connected to the test two-position two-way normally closed solenoid valve.
The specific implementation process comprises the following steps: the utility model relates to a quick calibration testing arrangement of portable gaseous detection alarm 3 includes following use step:
s1: installing gas cylinders, sequentially installing 3 (configured as required) standard gas cylinders with different concentrations into the control module 1, respectively connecting the calibration gas connectors 12 with the standard gas cylinders, and not opening the secondary pressure reducing valve 14;
s2: the waste gas is led out, the exhaust channel 19 is provided with an exhaust hose 6, and the other end of the exhaust hose 6 is led out of the room;
s3: when the power supply is started, the control module 1 is connected with commercial power through a three-core power line, a power switch is pressed, the control module 1 is turned on, and calibration software is turned on;
s4: introducing standard gas, sequentially opening a secondary pressure reducing valve 14 of the control module 1, and outputting at constant pressure (0.05 MPa);
s5: self-checking, namely entering an intelligent self-checking function, and sequentially checking functions and judging faults of the two-position two-way normally closed electromagnetic valve, the relay, the indicator light 7, the buzzer and the like to ensure that the device is in a normal working state; if functional faults occur, the calibration software interface updates fault information in time, and the targeted maintenance and processing by workers are facilitated;
s6: the portable gas detection alarm 3 is arranged, the portable gas detection alarm 3 to be detected is arranged in the test box body 21, the gas marking cover 4 is automatically attached to the portable gas detection alarm 3 after the test box cover 22 is closed, the type and the range of a sensor of the portable gas detection alarm 3, the AD value and the current concentration value of the sensor and the state of the portable gas detection alarm 3 are sequentially read, and the display screen 18 timely and correspondingly updates the state information of the portable gas detection alarm 3; when the information reading is completed, the display screen 18 indicates whether to use fresh air to bid zero; selecting 'yes', using fresh air to mark zero in the 'calibration' operation process, selecting 'no', and using nitrogen to mark zero in the 'calibration' operation process;
s7: calibrating, namely after the calibration is determined, the test module 2 is used for flashing an indicator light 7 in a green manner, the software drives the electromagnetic valves to work in order, standard gas is introduced in sequence, and the zero calibration and calibration work are carried out in sequence; the calibration completion indicator light 7 is green and normally on; when the calibration fails, the indicator light 7 is red and normally on; the display screen 18 updates data such as display concentration, calibration results and the like in real time; the observation and the processing of field workers are convenient. Calibration, the calibration device automatically generates calibration data, and the calibration data is automatically stored, so that subsequent export is facilitated;
s8: testing, after the test is determined, the indicator light 7 of the test module 2 is turned on in a green mode, the software drives the electromagnetic valves to work in order, standard gas is introduced, and the test work is carried out in sequence; after the test is finished, the indicator light 7 is normally on in a green state; when the test fails, the indicator light 7 is red and normally on; the display screen 18 updates data such as concentration test in real time, and is convenient for field workers to observe and process. Calibration, the calibration device automatically generates test data and automatically saves the test data, so that subsequent export is facilitated;
s9: the portable gas detection alarm 3 processes: the portable gas detection alarm instrument 33 is sent to an aging table, and the portable gas detection alarm instrument 33 is processed in a centralized way;
s10: repeating S6-S8 until the calibration and the test of the portable gas detection alarm 3 are completed;
s11: data export: after the work is finished, calibrating all the portable gas detection alarm instruments 33 and exporting the test result data;
s12: shutting down, closing all gas cylinder pressure reducing valves, pressing down an exhaust button, and automatically opening an electromagnetic valve to exhaust all tail gas in a gas circuit; pressing down a power switch of the calibration device to turn off the calibration device, and disconnecting a power line plug from the mains supply after the calibration device stops working; and (3) dismantling the gas cylinder and then placing the gas cylinder in a gas cylinder cabinet, placing the pressure reducing valve in the storage box, withdrawing the exhaust hose 6, returning the calibration device, and finishing the work.
The utility model discloses a quick calibration testing arrangement of portable gas detection alarm can accomplish hundreds of kinds of toxic gases, portable gas detection alarm and calibrate, test work. The device can enter the intelligent self-checking function after being started, and the device is ensured to be in a normal working state. If functional failure occurs, the display screen can update the failure information in time, so that the targeted maintenance and processing of workers are facilitated. The control module is provided with calibration software, real-time data of the portable gas detection alarm instrument is obtained through bidirectional infrared communication, and one-key calibration and one-key test of the portable gas detection alarm instrument can be realized. The software man-machine interface is friendly in design and can display data such as calibration results, test results and the like in real time. In the calibration and test processes, the data of the portable gas detection alarm instrument are collected and processed in real time, whether the data are abnormal or not is intelligently judged, and once the data are abnormal, the display screen can timely and correspondingly update the abnormal information of the gas detection alarm instrument, so that the pertinence processing of workers is facilitated. This device can carry out automatic quick calibration to 5 portable gas detection alarm instruments simultaneously, and demarcation, efficiency of software testing are high, the accuracy is high, and the staff operation of same proportion, efficiency improves more than 300%.
The above detailed description merely describes the preferred embodiments of the present invention and does not limit the scope of the present invention. Without departing from the design concept and spirit scope of the present invention, the ordinary skilled in the art should belong to the protection scope of the present invention according to the present invention provides the text description and drawings to the various modifications, replacements and improvements made by the technical solution of the present invention. The scope of protection of the present invention is determined by the claims.
Claims (8)
1. The utility model provides a quick calibration testing arrangement of portable gas detection alarm, its characterized in that, includes control module and a plurality of test module, test module is used for testing portable gas detection alarm, control module establishes the gas circuit with a plurality of gas cylinders for test simultaneously, the last exhaust passage who is used for discharging waste gas that is equipped with of control module, test module passes through the hose and is connected the gas circuit with control module, each gas circuit between the test module is parallelly connected, test module passes through serial ports data line and control module and establishes communication, the last buffer structure who is used for alleviating test gas impact portable gas detection alarm that is equipped with of test module.
2. The device for rapidly calibrating and testing the portable gas detection alarm instrument according to claim 1, wherein the testing module comprises a testing box body, a testing box cover is rotatably connected to the testing box body, a testing cavity for accommodating the portable gas detection alarm instrument is formed in the testing box body, the buffering structure comprises a gas marking cover arranged on the testing box cover, the gas marking cover is automatically attached to a gas detection part of the portable gas detection alarm instrument in a state that the testing box cover is closed on the testing box body, the gas marking cover receives and accommodates the marking gas introduced by the control module, and a stable gas environment is formed at the gas detection part of the portable gas detection alarm instrument.
3. The rapid calibration testing device of the portable gas detection alarm instrument as claimed in claim 2, wherein the calibration hood comprises a hood body, one side of the hood body facing the portable gas detection alarm instrument is open and has a cavity, the hood body is provided with a gas inlet for the entry of calibration gas and a gas outlet for the discharge of calibration gas, a testing two-position two-way normally closed solenoid valve is arranged in the testing box body, and the gas inlet is connected to the testing two-position two-way normally closed solenoid valve.
4. The rapid calibration testing device of the portable gas detection alarm instrument as claimed in claim 3, wherein the control module comprises a control box, the control box is connected with a plurality of calibration gas connectors for connecting different calibration gases, the control box is further provided with a clean gas connector for connecting clean air, the calibration gas connector and the clean gas connector are respectively connected with a secondary pressure reducing valve, and each secondary pressure reducing valve is respectively connected with a corresponding standard gas cylinder.
5. The portable gas detection alarm rapid calibration test device according to claim 4, wherein a two-position two-way normally closed solenoid valve for control is arranged in the control box, the number of the calibration gas connectors is 3, the number of the 3 clean gas connectors of the calibration gas connector box are connected to the two-position two-way normally closed solenoid valve for control, two control gas supply ports are arranged at the bottom of the control box, two test gas supply ports are arranged at the bottom of the test box body, and the test gas supply ports are connected with the control gas supply ports through hoses.
6. The portable gas detection alarm rapid calibration testing device as claimed in claim 5, wherein the two-position two-way normally closed solenoid valve box for testing and the two-position two-way normally closed solenoid valve for control are respectively provided with corresponding relays, a main control board for control is arranged in the control box, control software runs on the main control board, the control box is provided with an operation panel and a display screen, and the control box and the testing box body are respectively provided with an indicator light.
7. The portable gas detection alarm rapid calibration testing device of claim 1, wherein the number of the testing modules is not more than five.
8. The rapid calibration testing device of the portable gas detection alarm instrument according to claim 1, wherein the specifications of the gas cylinders connected to the control module include 1L, 2L, 4L and 8L.
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| CN202121376205.1U CN214847086U (en) | 2021-06-21 | 2021-06-21 | Quick calibration testing arrangement of portable gas detection alarm instrument |
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| CN202121376205.1U CN214847086U (en) | 2021-06-21 | 2021-06-21 | Quick calibration testing arrangement of portable gas detection alarm instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113240893A (en) * | 2021-06-21 | 2021-08-10 | 南京艾伊科技有限公司 | Quick calibration testing arrangement of portable gas detection alarm instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113240893A (en) * | 2021-06-21 | 2021-08-10 | 南京艾伊科技有限公司 | Quick calibration testing arrangement of portable gas detection alarm instrument |
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