CN215525712U

CN215525712U - Gas detection alarm performance test device

Info

Publication number: CN215525712U
Application number: CN202121564769.8U
Authority: CN
Inventors: 祁绩; 刘庆; 张雯; 张毅; 万力; 王新平; 黄君韬; 邹雪峰
Original assignee: INSTITUTE OF CHEMICAL NATIONAL TEST
Current assignee: INSTITUTE OF CHEMICAL NATIONAL TEST
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-01-14
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a performance test device of a gas detection alarm instrument, which comprises a test chamber, a fan system and a gas analyzer, wherein the inner wall of the test chamber is coated with fluorine or passivated, the test chamber is provided with an air inlet, a simulation cavity and a gas cavity are arranged in the test chamber, the fan system is arranged in the simulation cavity, the simulation cavity is provided with an air outlet communicated with the gas cavity, the air outlet is positioned above the air inlet, the gas analyzer is communicated with the gas cavity, and the gas cavity is rotatably provided with the gas detection alarm instrument to be detected for changing the relative direction of the gas detection alarm instrument to be detected and the air flow. The phenomenon that the inner wall of the test chamber and gas are adsorbed can be avoided, the accuracy of test data is improved, and meanwhile, the wind direction and wind speed environment can be simulated, so that the simulated environment is more attached to the actual working environment of the gas detection alarm.

Description

Gas detection alarm performance test device

Technical Field

The utility model relates to the technical field of performance tests of gas detection alarm instruments, in particular to a performance test device of a gas detection alarm instrument.

Background

In recent years, with increasing importance of countries and society on safety production and environmental detection, gas detection alarm devices are widely applied to various scenes. In order to test the performance of the gas detection alarm under different environmental conditions, measurement technical mechanisms and instrument manufacturers need test devices capable of simulating various environmental conditions. At present, a common high-low temperature wet and hot box on the market is generally used for performance test, but the following problems exist: 1. the air tightness of the system does not reach the standard, and gas leakage is easily caused; 2. the inner wall of the system is easy to adsorb with gas, so that the test result is influenced; 3. the environment with different temperature and humidity can only be simulated, and the environment conditions with different wind directions and wind speeds cannot be simulated. 4. GB 15322.1-2019 combustible gas detector part 1 cannot be satisfied: industrial and commercial use point-type combustible gas detectors and IEC62990-1-2019 workplace atmosphere-part 1: gas detector-performance requirements for toxic gas detectors.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a performance test device for a gas detection alarm instrument, which can avoid the phenomenon that the inner wall of a test chamber is adsorbed by gas, improve the accuracy of test data, and simulate the wind direction and wind speed environment to ensure that the simulated environment is more consistent with the actual working environment of the gas detection alarm instrument.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a gaseous detection alarm performance test device, includes test chamber, fan system and gas analysis appearance, the inner wall of test chamber is through scribbling fluorine or passivation treatment, the air inlet has been seted up to the test chamber, be equipped with simulation chamber and gas chamber in the test chamber, fan system sets up the simulation intracavity, the simulation chamber be equipped with the communicating air outlet in gas chamber, the air outlet is located the top of air inlet, gas analysis appearance with gas chamber intercommunication, gas intracavity internal rotation is provided with by gas detection alarm for change by the relative direction of gas detection alarm and air current.

Further, a temperature sensor is arranged in the gas cavity, a temperature control system is arranged in the simulation cavity, and the temperature control system is electrically connected with the temperature sensor.

Further, a humidity sensor is arranged in the gas cavity, a humidity control system is arranged in the simulation cavity, and the humidity control system is electrically connected with the humidity sensor.

Furthermore, an anemoscope is arranged in the gas cavity and used for detecting the wind speed value of the airflow at the air outlet.

Furthermore, the test chamber is provided with a sampling port, the sampling port is positioned on an air outlet path of the air outlet, and gas flowing out of the sampling port flows into the gas analyzer.

Further, an air pump is arranged between the gas analyzer and the sampling port, an air inlet of the air pump is communicated with the sampling port through a pipeline, a valve is arranged on the pipeline, and an air outlet of the air pump is connected with an input port of the gas analyzer.

Furthermore, an emptying pipe is arranged at the bottom of the test chamber, and a valve is arranged on the emptying pipe.

Furthermore, a multi-axis rotating platform is arranged in the gas cavity, and the gas detection alarm is mounted on the multi-axis rotating platform.

Further, a gas tank is arranged on the outer side of the test chamber, gas standard substances are loaded in the gas tank, the gas tank is communicated with the gas inlet through a gas inlet pipe, and a valve is arranged on the gas inlet pipe.

The utility model has the beneficial effects that:

1. the utility model provides a gas detection alarm performance test device, adopts closed test chamber to set up simulation chamber and gas chamber in the inside of test chamber, effectively separate environmental simulation system and gaseous standard substance, avoid influencing the accuracy nature of test result, improved test device's gas tightness simultaneously, effectively prevent gas leakage.

2. The inner wall of the test chamber is coated with fluorine or passivated, so that gas adsorption can be effectively prevented.

3. The accessible multiaxis rotates the platform and drives the gas detection alarm appearance of being detected rotatory, changes the air-out air current contained angle of gas detection alarm appearance of being detected and air outlet, realizes simulating different wind direction conditions for experiment wind direction and wind speed laminate actual environment more.

4. The experiment humidity and temperature are simulated through the temperature control system and the humidity control system, so that the experiment temperature and the experiment humidity are closer to the actual environment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a gas detection alarm performance testing device of the present invention;

FIG. 2 is a schematic view of the internal structure of a test chamber in the performance test device of the gas detection alarm apparatus of the present invention;

in the figure, 1-a test chamber, 2-a gas analyzer, 3-an air inlet, 4-a simulation chamber, 5-a gas chamber, 6-an air outlet, 7-a gas detection alarm to be detected, 8-a temperature sensor, 9-a humidity sensor, 10-an anemometer, 11-a sampling port, 12-an air pump, 13-an emptying pipe, 14-an air tank and 15-an air inlet pipe.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

As shown in fig. 1 and 2, a gas detection alarm performance test device, including test chamber 1, fan system and gas analysis appearance 2, the inner wall of test chamber 1 is through scribbling fluorine or passivation treatment, can effectively prevent gas adsorption, guarantee the accuracy of experimental data, air inlet 3 has been seted up to test chamber 1, be equipped with simulation chamber 4 and gas chamber 5 in the test chamber 1, the fan system sets up in simulation chamber 4, simulation chamber 4 is equipped with the communicating air outlet 6 with gas chamber 5, air outlet 6 is located the top of air inlet 3, gas analysis appearance 2 communicates with gas chamber 5, gas chamber 5 internal rotation is provided with by gas detection alarm 7, a relative direction for changing by gas detection alarm 7 and the air current. The closed test chamber 1 is adopted, and the simulation cavity 4 and the gas cavity 5 are arranged in the test chamber 1, so that the environment simulation system is effectively separated from the gas standard substance, the accuracy of the test result is prevented from being influenced, the gas tightness of the test device is improved, and gas leakage is effectively prevented; the outer side of the test chamber 1 is provided with a gas tank 14, gas standard substances are loaded in the gas tank 14, the gas tank 14 is communicated with a gas inlet 3 through a gas inlet pipe 15, a valve is arranged on the gas inlet pipe 15, the valve on the gas inlet pipe 15 is opened, so that the gas standard substances in the gas tank 14 enter a gas cavity 5 through the gas inlet 3, wind generated by a fan system is discharged into the gas cavity 5 through a gas outlet 6, the air inlet direction of the gas standard substances is perpendicular to the air outlet direction of the gas outlet 6, so that gas flow blows the gas standard substances to fill the whole test chamber 1, the gas standard substances are distributed more uniformly, the gas detection alarm instrument 7 to be detected is convenient to detect, the gas standard substances flow from the gas cavity 5 to the gas analyzer 2, the concentration of the gas standard substances is detected through the gas analyzer 2, and finally the performance of the gas detection alarm instrument is evaluated by comparing the indication value difference between the gas analyzer 2 and the gas detection alarm instrument, thereby making the evaluation result more standard.

Further, as shown in fig. 2, a temperature sensor 8 is arranged in the gas cavity 5, a temperature control system is arranged in the simulation cavity 4, and the temperature control system is electrically connected with the temperature sensor 8; the temperature change in the gas cavity 5 is detected through the temperature sensor 8, the temperature environment in the gas cavity 5 is adjusted through the temperature control system, so that different temperature environments can be simulated in the gas cavity 5, the temperature control system comprises a temperature single chip microcomputer electrically connected with the temperature sensor 8 and a heating element arranged in the gas cavity 1, the heating element is electrically connected with the temperature single chip microcomputer, the heating element can be a heating wire, and the temperature in the gas cavity 5 is homogenized through airflow discharged from the air outlet 6; a humidity sensor 9 is arranged in the gas cavity 5, a humidity control system is arranged in the simulation cavity 4, and the humidity control system is electrically connected with the humidity sensor 9; the humidity sensor 9 is used for detecting the humidity change in the gas cavity 5, the humidity environment in the gas cavity 5 is adjusted through the humidity control system, different humidity environments can be simulated in the gas cavity 5, the humidity control system comprises a humidity single chip microcomputer and a humidity element, the humidity single chip microcomputer is electrically connected with the humidity sensor 9, the humidity element is arranged in the gas cavity 5 and is electrically connected with the humidity single chip microcomputer, the humidity element can adopt an atomizing nozzle communicated with a water source, and the humidity in the gas cavity 5 is more uniform through airflow discharged from the air outlet 6; an anemoscope 10 is arranged in the gas cavity 5, the anemoscope 10 is used for detecting a wind speed value of airflow at the wind port 6 and feeding the wind speed value back to a fan system for adjusting the wind speed, the wind speed system comprises a single chip microcomputer and a fan which are electrically connected with the anemoscope 10, the fan is electrically connected with the single chip microcomputer, and wind generated by the fan is blown out through the wind port 6; to sum up, the test cabin 1 can effectively control the internal temperature, humidity and wind speed conditions, simulate different test environments, and make the test environment more fit the actual working environment of the gas detection alarm 7, make the performance test data of the gas detection alarm 7 more accurate.

Further, a sample connection 11 has been seted up in test chamber 1, sample connection 11 is located the air-out route of air outlet 6, the gas that sample connection 11 flows into gas analyzer 2, be provided with aspiration pump 12 between gas analyzer 2 and the sample connection 11, the air inlet of aspiration pump 12 passes through pipeline and sample connection 11 intercommunication, be provided with the valve on the pipeline, the gas outlet of aspiration pump 12 and gas analyzer 2's input port are connected, extract gaseous standard substance in the gas chamber 5 through aspiration pump 12, a gas standard substance is input to gas analyzer 2, obtain the detection numerical value through gas analyzer 2.

Furthermore, the bottom of the test chamber 1 is provided with an emptying pipe 13, the emptying pipe 13 is provided with a valve, and the valve on the emptying pipe 13 is opened to quickly empty the gas standard substance in the gas cavity 5.

Further, be provided with multiaxis rotation platform in the gas chamber 5, it installs on multiaxis rotation platform to be detected gas detection alarm 7, accessible multiaxis rotation platform drives to be detected gas detection alarm 7 rotatory, change the air-out air current contained angle of being detected gas detection alarm 7 and air outlet 6, realize simulating different wind direction condition, make experiment wind direction and wind speed actual environment of laminating more, when specifically implementing, but multiaxis rotation platform adopts remote control's cavity rotation platform, cavity rotation platform is prior art, no longer give unnecessary details here.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a gaseous detection alarm performance test device, its characterized in that, includes test chamber (1), fan system and gas analysis appearance (2), the inner wall of test chamber (1) is through scribbling fluorine or passivation treatment, air inlet (3) have been seted up in test chamber (1), be equipped with simulation chamber (4) and gas chamber (5) in test chamber (1), the fan system sets up in simulation chamber (4), simulation chamber (4) be equipped with communicating air outlet (6) of gas chamber (5), air outlet (6) are located the top of air inlet (3), gas analysis appearance (2) with gas chamber (5) intercommunication, gas chamber (5) internal rotation is provided with by gas detection alarm appearance (7) for change by the relative direction of gas detection alarm appearance (7) and air current.

2. The gas detection alarm performance test device according to claim 1, wherein a temperature sensor (8) is arranged in the gas cavity (5), and a temperature control system is arranged in the simulation cavity (4), and the temperature control system is electrically connected with the temperature sensor (8).

3. The performance test device of the gas detection alarm instrument according to claim 2, wherein a humidity sensor (9) is arranged in the gas cavity (5), a humidity control system is arranged in the simulation cavity (4), and the humidity control system is electrically connected with the humidity sensor (9).

4. The performance test device of the gas detection alarm instrument according to claim 3, wherein an anemoscope (10) is arranged in the gas cavity (5), and the anemoscope (10) is used for detecting the wind speed value of the airflow at the wind outlet (6).

5. The performance test device of the gas detection alarm instrument according to claim 1, wherein the test chamber (1) is provided with a sampling port (11), the sampling port (11) is located on an air outlet path of the air outlet (6), and gas flowing out of the sampling port (11) flows into the gas analyzer (2).

6. The performance test device of the gas detection alarm instrument according to claim 5, wherein a suction pump (12) is arranged between the gas analyzer (2) and the sampling port (11), an air inlet of the suction pump (12) is communicated with the sampling port (11) through a pipeline, a valve is arranged on the pipeline, and an air outlet of the suction pump (12) is connected with an input port of the gas analyzer (2).

7. The gas detection alarm performance test device according to claim 1, wherein an emptying pipe (13) is arranged at the bottom of the test chamber (1), and a valve is arranged on the emptying pipe (13).

8. The gas detection alarm performance testing device according to claim 1, characterized in that a multi-axis rotating platform is arranged in the gas cavity (5), and the gas detection alarm (7) to be tested is mounted on the multi-axis rotating platform.

9. The performance test device of the gas detection alarm instrument is characterized in that a gas tank (14) is arranged on the outer side of the test chamber (1), a gas standard substance is loaded in the gas tank (14), the gas tank (14) is communicated with the gas inlet (3) through a gas inlet pipe (15), and a valve is arranged on the gas inlet pipe (15).