CN109712372B - Gas alarm instrument calibration system - Google Patents
Gas alarm instrument calibration system Download PDFInfo
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- CN109712372B CN109712372B CN201910074521.4A CN201910074521A CN109712372B CN 109712372 B CN109712372 B CN 109712372B CN 201910074521 A CN201910074521 A CN 201910074521A CN 109712372 B CN109712372 B CN 109712372B
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- 238000004164 analytical calibration Methods 0.000 title abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 194
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 238000005406 washing Methods 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 14
- 239000003153 chemical reaction reagent Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a gas alarm instrument calibration system, which comprises a cabinet body, wherein the cabinet body comprises a gas cylinder cabinet, an operation cabinet and an exhaust cabinet, and a gas mixing panel is arranged in the operation cabinet; an air suction device, a plurality of third switch valves and a plurality of air washing devices are arranged in the air exhaust cabinet, the outlet of the air suction device is respectively connected with the third switch valves, the third switch valves are connected with the air washing devices and then are connected with an air exhaust port, and at least one third switch valve is directly connected with the air exhaust port; the gas mixing panel detects the air outlet and passes through the air inlet of hose connection getter device, is provided with the calibration cover on the hose. This kind of gas alarm appearance calibration system is directly in discharging the exhaust cabinet with tail gas through the hose, has reduced and has leaked, is provided with different gas washing devices to various detection gases in the exhaust cabinet, through opening different second ooff valves for different detection gases get into corresponding gas washing device when discharging and carry out tail gas absorption or directly discharge.
Description
Technical Field
The invention belongs to the technical field of gas alarm instrument detection devices, and particularly relates to a gas alarm instrument calibration system.
Background
The gas alarm is a gas detection device installed in a household or a factory, and the gas alarm has various kinds, such as a hydrogen alarm, a carbon monoxide alarm, an ammonia alarm, a natural gas alarm and the like. The gas alarm instrument may fail in a long-term use process, so that the gas alarm instrument needs to be detected regularly to ensure that the gas alarm instrument can effectively alarm. Therefore, detection companies for detecting whether various gas alarms are effective have been developed. The existing detection method is to connect a calibration cover on a detection head of a gas alarm instrument, then to introduce standard gas for detection, if the standard gas gives an alarm above a set gas concentration, the gas alarm instrument is proved to be effective, and if the standard gas gives an alarm below the set gas concentration or the standard gas does not give an alarm above the set gas concentration, the gas alarm instrument is proved to be invalid and needs maintenance.
The existing gas alarm calibrating device generally comprises a plurality of standard gas cylinders, the standard gas cylinders are connected with a calibrating cover through pipelines, the calibrating cover is connected with a detecting head of the gas alarm, and the calibrating cover is respectively connected with the plurality of standard gas cylinders through pipelines so as to detect whether the gas alarm fails. The detection gas in the calibration cover is generally directly discharged during detection, which may pollute the environment and affect the personal safety.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the gas alarm calibrating system which directly discharges the tail gas into the exhaust cabinet through the hose, reduces leakage, can treat the tail gas of the detected gas and reduces environmental pollution and personal hazard.
In order to solve the technical problems, the invention is solved by the following technical scheme: the gas alarm instrument calibration system comprises a cabinet body, wherein the cabinet body comprises a gas cylinder cabinet, an operation cabinet and an exhaust cabinet, and a gas mixing panel is arranged in the operation cabinet; an air suction device, a plurality of third switch valves and a plurality of air washing devices are arranged in the air exhaust cabinet, the outlets of the air suction device are respectively connected with the third switch valves, the third switch valves are connected with the air washing devices and then are connected with an air outlet, and at least one third switch valve is directly connected with the air outlet; the detection gas outlet of the gas mixing panel is connected with the gas inlet of the gas suction device through a hose, and a calibration cover is arranged on the hose. This kind of gas alarm appearance calibration system is directly in discharging the exhaust cabinet with tail gas through the hose, has reduced and has leaked, is provided with different gas washing devices to various detection gases in the exhaust cabinet, through opening different second ooff valves for different detection gases get into corresponding gas washing device when discharging and carry out tail gas absorption or directly discharge, thereby make exhaust emission more environmental protection and safety.
In the above technical solution, preferably, the gas mixing panel is provided with a plurality of detection gas connectors and nitrogen gas connectors, the detection gas connectors are respectively connected with a first pressure reducing valve and a first switching valve, and then are connected with a first flow regulating valve in a converging manner, the nitrogen gas connectors are sequentially connected with a second pressure reducing valve, a second switching valve and a second flow regulating valve, and the first flow regulating valve and the second flow regulating valve are both communicated with a detection gas outlet; a plurality of gas cylinders are arranged in the gas cylinder cabinet, and the gas cylinders are connected with the detection gas connectors and the nitrogen connectors in a one-to-one correspondence mode. The gas for testing is used through the control of each first switching valve, the standard gas quantity is reduced through the configuration of each concentration standard gas of the first flow valve and the second flow valve, and the pressure reducing valve is integrated into the gas mixing panel, so that a single gas cylinder does not need to be provided with the pressure reducing valve, the quantity of the pressure reducing valves is reduced, and the cost is saved.
In the above technical scheme, preferably, one side of the operation cabinet is provided with an opening, two sides of the opening are provided with sliding rails, and sliding windows are arranged on the sliding rails. By adopting the structure, the sliding window can be closed when the detection is carried out, so that some harmful gases can not cause harm to human bodies when the detection is carried out.
In the above technical scheme, preferably, the gas cylinder comprises a detection gas cylinder and a nitrogen gas cylinder, the detection gas cylinder is respectively connected with the detection gas connection ports, and the nitrogen gas cylinder is connected with the nitrogen gas connection ports.
In the above technical solution, preferably, a first check valve is disposed between the first flow rate adjusting valve and the detected gas outlet, and a second check valve is disposed between the second flow rate adjusting valve and the detected gas outlet. By adopting the structure, the gas in the detection gas cylinder and the nitrogen gas cylinder can be prevented from flowing mutually, and the purity of the gas in the gas cylinder is ensured.
In the above technical scheme, preferably, the exhaust cabinet is provided with a plurality of openable accommodating chambers, and the accommodating chambers are respectively provided with the gas washing device. By adopting the structure, the gas washing device can be conveniently replaced.
In the above technical solution, preferably, the gas washing device is a reagent bottle containing a reagent for absorbing the detection gas. The reagent bottle is adopted as the gas washing device, so that the structure is simple, the cost is low and the replacement is convenient.
In the above technical scheme, preferably, the operation cabinet is provided with the calibration cover positioning device, the calibration cover positioning device comprises a base, a guide rod and a tension spring, the guide rod is vertically fixed on the base, the guide rod is provided with the calibration cover in a sliding manner, the tension spring is arranged between the calibration cover and the base, two sides of the calibration cover are communicated with the hose, and the bottom of the calibration cover is provided with a detection port. The structure is adopted to enable the gas alarm to be conveniently positioned with the calibration cover, so that detection is convenient, and detection gas in the calibration cover is directly transmitted into the gas discharge cabinet after passing through the detection port, so that leakage of the detection gas is reduced.
In the above technical scheme, preferably, the base is provided with a positioning groove for the gas alarm instrument. The structure is adopted to enable the gas alarm to be positioned more accurately.
In the above technical solution, preferably, the first switching valve, the first flow rate adjusting valve, the second pressure reducing valve, the second switching valve, the second flow rate adjusting valve and the third switching valve are all electromagnetic valves and are connected with a control device. By adopting the structure, various valves can be remotely controlled by the control device, the possibility of harm to human bodies caused by contact gas is reduced, and the control is more convenient.
Compared with the prior art, the invention has the following beneficial effects: this kind of gas alarm appearance calibration system is directly in discharging the exhaust cabinet with tail gas through the hose, has reduced and has leaked, is provided with different gas washing devices to various detection gases in the exhaust cabinet, through opening different second ooff valves for different detection gases get into corresponding gas washing device when discharging and carry out tail gas absorption or directly discharge, thereby make exhaust emission more environmental protection and safety.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a calibration mask positioning device according to an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description: referring to fig. 1 to 2, a gas alarm calibration system comprises a cabinet body 1, wherein the cabinet body 1 comprises a gas cylinder cabinet 2, an operation cabinet 3 and an exhaust cabinet 4, a gas mixing panel 5 is arranged in the operation cabinet 3, a plurality of detection gas connectors 6 and nitrogen connectors 7 are arranged on the gas mixing panel 5, the detection gas connectors 6 are respectively connected with a first pressure reducing valve 8 and a first switching valve 9 and then are connected with a first flow regulating valve 10 in a converging manner, the nitrogen connectors 7 are sequentially connected with a second pressure reducing valve 11, a second switching valve 12 and a second flow regulating valve 13, and the first flow regulating valve 10 and the second flow regulating valve 13 are both communicated with a detection gas outlet 14; a plurality of gas cylinders 15 are arranged in the gas cylinder cabinet 2, and the gas cylinders 15 are correspondingly connected with the detection gas connectors 6 and the nitrogen connectors 7 one by one; an air suction device 16, a plurality of third switch valves 17 and a plurality of air washing devices 18 are arranged in the air exhaust cabinet 4, the outlets of the air suction device 16 are respectively connected with the third switch valves 17, the third switch valves 17 are connected with the air washing devices 18 and then are connected with an air exhaust port 19, and at least one third switch valve 17 is directly connected with the air exhaust port 19; the detection gas outlet 14 is connected to the gas inlet of the gas suction device 16 through a hose 20, and a calibration cover 21 is arranged on the hose 20. The gas alarm calibration system can use the gas for certain test through the control of each first switching valve, the configuration of each concentration standard gas is realized through the first flow valve and the second flow valve, so that the number of standard gas cylinders is reduced, the pressure reducing valves are integrated into the gas mixing panel, the single gas cylinder does not need to be reconfigured, the number of the pressure reducing valves is reduced, the cost is saved, the tail gas is directly discharged into the exhaust cabinet through the hose, the leakage is reduced, meanwhile, different gas washing devices are arranged in the exhaust cabinet for various detection gases, and the different detection gases enter the corresponding gas washing devices to be absorbed by the tail gas or directly discharged when being discharged through the cooperation of the first switching valve and the second switching valve, so that the tail gas is more environment-friendly and safer.
An opening 31 is formed in one side of the operation cabinet 3, sliding rails 32 are arranged on two sides of the opening 31, and sliding windows 33 are arranged on the sliding rails 32. By adopting the structure, the sliding window can be closed when the detection is carried out, so that some harmful gases can not cause harm to human bodies when the detection is carried out.
In this embodiment, the gas cylinders 15 include a detection gas cylinder 151 and a nitrogen gas cylinder 152, the detection gas cylinder 151 is connected to the detection gas connection port 6, and the nitrogen gas cylinder 152 is connected to the nitrogen gas connection port 7.
A first check valve 22 is disposed between the first flow rate adjusting valve 10 and the detected gas outlet 14, and a second check valve 23 is disposed between the second flow rate adjusting valve 13 and the detected gas outlet 14. By adopting the structure, the gas in the detection gas cylinder and the nitrogen gas cylinder can be prevented from flowing mutually, and the purity of the gas in the gas cylinder is ensured.
The exhaust cabinet 4 is provided with a plurality of openable accommodating chambers 41, and the accommodating chambers 41 are internally provided with the gas washing devices 18 respectively. By adopting the structure, the gas washing device can be conveniently replaced.
The gas washing device 18 is a reagent bottle for absorbing the reagent of the detection gas. The reagent bottle is adopted as the gas washing device, so that the structure is simple, the cost is low and the replacement is convenient.
The operation cabinet 3 is provided with a calibration cover positioning device 24, the calibration cover positioning device 24 comprises a base 241, a guide rod 242 and a tension spring 243, the guide rod 242 is vertically fixed on the base 241, the guide rod 242 is slidably provided with the calibration cover 21, the tension spring 243 is arranged between the calibration cover 21 and the base 241, two sides of the calibration cover 21 are communicated with the hose 20, and the bottom of the calibration cover 21 is provided with a detection port 211. The structure is adopted to enable the gas alarm to be conveniently positioned with the calibration cover, so that detection is convenient, and detection gas in the calibration cover is directly transmitted into the gas discharge cabinet after passing through the detection port, so that leakage of the detection gas is reduced.
The base 241 is provided with a gas alarm positioning groove 244. The structure is adopted to enable the gas alarm to be positioned more accurately.
The first switching valve 9, the first flow rate regulating valve 10, the second pressure reducing valve 11, the second switching valve 12, the second flow rate regulating valve 13 and the third switching valve 17 are all electromagnetic valves and are connected with a control device. By adopting the structure, various valves can be remotely controlled by the control device, the possibility of harm to human bodies caused by contact gas is reduced, and the control is more convenient.
When the gas alarm calibration system is used, firstly, the gas alarm is positioned, the detection head of the gas alarm is in butt joint with the detection port of the calibration cover, then the sliding window is closed, the flow rates of the first flow valve and the second flow valve are set through the control system according to the gas type and the gas concentration, then the corresponding first switch valve, second switch valve and third switch valve are opened, the gas washing device corresponding to the opened third switch valve is used for absorbing the detected gas, or the detected gas is nontoxic and free of environmental pollution, and the third switch valve is directly connected with the gas outlet; after a period of starting, the percentage of the detected gas tends to be stable, and then the gas concentration is gradually increased or decreased to see whether the gas alarm instrument alarms correctly, so that whether the gas alarm instrument works normally can be accurately judged.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A gas alarm calibration system, characterized in that: the gas-liquid mixing device comprises a cabinet body (1), wherein the cabinet body (1) comprises a gas cylinder cabinet (2), an operation cabinet (3) and a gas exhaust cabinet (4), and a gas mixing panel (5) is arranged in the operation cabinet (3); an air suction device (16), a plurality of third switch valves (17) and a plurality of air washing devices (18) are arranged in the air exhaust cabinet (4), the outlets of the air suction device (16) are respectively connected with the third switch valves (17), the third switch valves (17) are connected with the air washing devices (18) and then are connected with an air exhaust port (19), and at least one third switch valve (17) is directly connected with the air exhaust port (19); the detection gas outlet (14) of the gas mixing panel (5) is connected with the gas inlet of the gas suction device (16) through a hose (20), a calibration cover (21) is arranged on the hose (20), a plurality of detection gas connectors (6) and nitrogen connectors (7) are arranged on the gas mixing panel (5), the detection gas connectors (6) are respectively connected with a first pressure reducing valve (8) and a first switching valve (9) and then are connected with a first flow regulating valve (10) in a converging manner, the nitrogen connectors (7) are sequentially connected with a second pressure reducing valve (11), a second switching valve (12) and a second flow regulating valve (13), and the first flow regulating valve (10) and the second flow regulating valve (13) are communicated with the detection gas outlet (14); be provided with a plurality of gas cylinders (15) in gas cylinder cabinet (2), a plurality of gas cylinders (15) with a plurality of detect gas connector (6) with nitrogen gas connector (7) one-to-one is connected, be provided with calibration cover positioner (24) on operation cabinet (3), calibration cover positioner (24) include base (241), guide bar (242) and extension spring (243), guide bar (242) are vertical to be fixed on base (241), slide on guide bar (242) and be provided with calibration cover (21), calibration cover (21) with be provided with extension spring (243) between base (241), calibration cover (21) both sides intercommunication hose (20), the bottom of calibration cover (21) is provided with detection mouth (211).
2. A gas alarm calibration system as defined in claim 1, wherein: an opening (31) is formed in one side of the operation cabinet (3), sliding rails (32) are arranged on two sides of the opening (31), and sliding windows (33) are arranged on the sliding rails (32).
3. A gas alarm calibration system as defined in claim 1, wherein: the gas cylinder (15) comprises a detection gas cylinder (151) and a nitrogen gas cylinder (152), wherein the detection gas cylinder (151) is respectively connected with the detection gas connection port (6), and the nitrogen gas cylinder (152) is connected with the nitrogen gas connection port (7).
4. A gas alarm calibration system as defined in claim 1, wherein: a first one-way valve (22) is arranged between the first flow regulating valve (10) and the detection gas outlet (14), and a second one-way valve (23) is arranged between the second flow regulating valve (13) and the detection gas outlet (14).
5. A gas alarm calibration system as defined in claim 1, wherein: a plurality of openable accommodating chambers (41) are arranged on the exhaust cabinet (4), and the air washing devices (18) are respectively arranged in the accommodating chambers (41).
6. A gas alarm calibration system according to claim 1 or 5, wherein: the gas washing device (18) is a reagent bottle which is provided with a reagent for absorbing and detecting gas.
7. A gas alarm calibration system as defined in claim 1, wherein: and a gas alarm positioning groove (244) is formed in the base (241).
8. A gas alarm calibration system as defined in claim 1, wherein: the first switching valve (9), the first flow regulating valve (10), the second pressure reducing valve (11), the second switching valve (12), the second flow regulating valve (13) and the third switching valve (17) are all electromagnetic valves and are connected with a control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074521.4A CN109712372B (en) | 2019-01-25 | 2019-01-25 | Gas alarm instrument calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910074521.4A CN109712372B (en) | 2019-01-25 | 2019-01-25 | Gas alarm instrument calibration system |
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| Publication Number | Publication Date |
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| CN109712372A CN109712372A (en) | 2019-05-03 |
| CN109712372B true CN109712372B (en) | 2023-10-13 |
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| CN201910074521.4A Active CN109712372B (en) | 2019-01-25 | 2019-01-25 | Gas alarm instrument calibration system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780041B (en) * | 2019-11-12 | 2021-01-05 | 中国原子能科学研究院 | Online calibration system and method for hydrogen isotope mixed gas concentration detection alarm instrument |
| CN114463953A (en) * | 2022-02-22 | 2022-05-10 | 珠海市中肯检测技术服务有限公司 | Calibration device and method for portable gas detection alarm |
| CN114999133B (en) * | 2022-06-06 | 2022-12-23 | 浙江聚森检测科技有限公司 | Calibration equipment capable of automatically adjusting positioning position of gas alarm |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6997347B2 (en) * | 2003-07-02 | 2006-02-14 | Industrial Scientific Corporation | Apparatus and method for generating calibration gas |
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|---|---|---|---|---|
| CN2733315Y (en) * | 2004-09-22 | 2005-10-12 | 陈淮新 | Coal mine safety monitor sensor calibration apparatus |
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Inventor after: Xu Jiongcan Inventor after: Jia Bo Inventor after: Zhang Wenbin Inventor after: Gao Jiake Inventor after: Wang Zewen Inventor before: Xu Jiongcan Inventor before: Jia Bo Inventor before: Zhang Wenbin Inventor before: Gao Jiake Inventor before: Zhao Jiefeng |