CN115356442A - Detection apparatus for virulent gas in airtight space - Google Patents
Detection apparatus for virulent gas in airtight space Download PDFInfo
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- CN115356442A CN115356442A CN202210980957.1A CN202210980957A CN115356442A CN 115356442 A CN115356442 A CN 115356442A CN 202210980957 A CN202210980957 A CN 202210980957A CN 115356442 A CN115356442 A CN 115356442A
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- valve
- gas
- sealed box
- detection
- box body
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000002341 toxic gas Substances 0.000 claims abstract description 23
- 238000005070 sampling Methods 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of gas detection, and discloses a detection device for highly toxic gas in a closed space, which comprises a sealed box body and an air inlet valve, wherein a bin gate is arranged on the sealed box body, the top of the sealed box body is provided with the air inlet valve, the bottom of the sealed box body is provided with a first exhaust valve, and the exhaust end of the air inlet valve is communicated with the air inlet end of the first exhaust valve through a core pipe. This detection device of virulent gas in airtight space, through sealed box cooperation vacuum pump, the admission valve, first discharge valve, the second discharge valve, the core pipe, the three-way pipe, the sample valve, sample tube and gaseous detection subassembly are to the inside gas of airtight space that awaits measuring extracting and detecting, thereby avoid gaseous in testing process and personnel's contact and cause the condition emergence of incident, the atmospheric pressure difference that gaseous detection subassembly was flowed through in the control of being convenient for through core pipe and sealed box double-chamber body simultaneously, realize the effect of simple and convenient high accuracy detection and high security.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a detection device for virulent gas in a closed space.
Background
In special production processes such as nuclear industry and the like, extremely toxic gases are accompanied in reactants or products, for example, nickel carbonyl is often used as a precursor in vacuum nickel plating, the allowable content of the nickel carbonyl in the air is very low and is less than 0.001mg/m < 3 >, and when the content is 1mg/m < 3 >, a human body is seriously injured, so that when the closed cavity needs to be opened, the detection of residual gases must be carried out firstly, and the detection has the following specificity: some highly toxic gases have special test modes, no real-time monitoring detector is available, only one-time gas detection tube can be used for sampling inspection, and the gas detection tube needs to be manually replaced during each test; usually, the leakage of the highly toxic gas in the manual sampling process causes potential safety hazards in the detection process, so the detection device for the highly toxic gas in the closed space is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a detection device for virulent gases in a closed space, which has the advantages of high-precision detection, high safety and the like, solves the problem that when the closed cavity needs to be opened, the detection of residual gases must be carried out firstly, and has the following particularity: some highly toxic gases have special test modes, no real-time monitoring detector is available, only one-time gas detection tube can be used for sampling inspection, and the gas detection tube needs to be manually replaced during each test; the problem of potential safety hazard exists in the detection process because of highly toxic gas leakage in the manual sampling process usually.
(II) technical scheme
In order to achieve the purposes of high-precision detection and high safety, the invention provides the following technical scheme: the utility model provides a detection apparatus for virulent gas in airtight space, including sealed box, be provided with the door on the sealed box, still include the admission valve, the top of sealed box is provided with the admission valve, the bottom of sealed box is provided with first discharge valve, the exhaust end of admission valve passes through the core pipe intercommunication with the inlet end of first discharge valve, the bottom of sealed box is provided with second discharge valve, the exhaust end of second discharge valve is provided with the three-way pipe with the exhaust end intercommunication of first discharge valve, the exhaust end of three-way pipe is provided with the vacuum pump, the exhaust end of vacuum pump and the inlet end intercommunication of outside exhaust-gas treatment case, be provided with the sample valve on the core pipe, the exhaust end of sample valve is provided with the sampling tube, the detachable gaseous determine module that is provided with of exhaust end of sampling tube.
Preferably, the gas-filling device further comprises an inflation valve and a pressure regulating valve, wherein the inflation valve is arranged on the sealed box body and used for filling inert gas into the sealed box body, and the pressure regulating valve is arranged on the core pipe and used for regulating the pressure difference between the sealed box body and the core pipe.
Preferably, gaseous determine module includes gaseous detecting tube and hand pump, and gaseous detecting tube is detachable to be set up in the exhaust end of sampling tube, and the hand pump is detachable to be set up in the exhaust end of gaseous detecting tube, is provided with gloves on the sealed box.
(III) advantageous effects
Compared with the prior art, the invention provides a detection device for highly toxic gas in a closed space, which has the following beneficial effects:
this detection device of virulent gas in airtight space, through sealed box cooperation vacuum pump, the admission valve, first discharge valve, the second discharge valve, the core pipe, the three-way pipe, the sample valve, sampling tube and gas detection subassembly are extracted and are detected the airtight space inside gas that awaits measuring, thereby avoid gaseous in testing process and personnel's contact and cause the condition emergence of incident, the atmospheric pressure difference that gas detection subassembly was flowed through in the control of being convenient for through core pipe and sealed box double cavity simultaneously, realize the effect of simple and convenient high accuracy detection and high security.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a detection apparatus for highly toxic gases in an enclosed space according to the present invention;
fig. 2 is a schematic view of a second structure of the detection apparatus for highly toxic gas in a closed space according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a detection apparatus for highly toxic gases in a closed space includes a sealed box 10, a door 11 is movably mounted on the sealed box 10, and further includes an air inlet valve 2, an air inlet valve 2 extending into the sealed box 10 is fixedly mounted on the top of the sealed box 10, a first exhaust valve 3 extending into the sealed box 10 is fixedly mounted at the bottom of the sealed box 10 and under the air inlet valve 2, an air inlet end of the first exhaust valve 3 is communicated with an air outlet end of the air inlet valve 2 through a core tube 4, a second exhaust valve 5 extending into the sealed box 10 is fixedly mounted at the bottom of the sealed box 10, an air outlet end of the second exhaust valve 5 is communicated with an air outlet end of the first exhaust valve 3 through a three-way pipe 6, a vacuum pump 7 is fixedly installed at the exhaust end of the three-way pipe 6, the exhaust end of the vacuum pump 7 is communicated with the air inlet end of an external waste gas treatment box, a sampling valve 8 extending into the core pipe 4 is fixedly installed on the core pipe 4, a sampling pipe 9 is fixedly installed at the exhaust end of the sampling valve 8, the sampling pipe 9 is a metal thin pipe, the inner diameter of the sampling pipe 9 is not more than 10mm, the length of the sampling pipe 9 is not more than 5cm, one end of the sampling pipe 9 is communicated with the core pipe 4 through the sampling valve 8, the other end of the sampling pipe 9 is provided with a material such as a rubber plug which is in switching connection with a glass pipe so as to be connected with a gas detection component 12, a gas detection component 12 is detachably and fixedly installed at the exhaust end of the sampling pipe 9, and the gas detection component 12 is in a plugging connection mode with the sampling pipe 9; the gas inlet end of the gas inlet valve 2 is communicated with the airtight space to be detected, the gas inlet valve 2 is closed, the first exhaust valve 3 is opened, the second exhaust valve 5 and the sampling valve 8 are opened, the vacuum pump 7 is started, the gas in the core tube 4 and the sealed box 10 is pumped out by the vacuum pump 7 through the three-way pipe 6 and is in a vacuum negative pressure state, the situation that residual gas in the core tube 4 and the sealed box 10 influences the measurement precision of the detection device is avoided, the first exhaust valve 3 is closed, the second exhaust valve 5 and the sampling valve 8 are closed, the gas inlet valve 2 is opened, the gas in the airtight space to be detected is guided into the core tube 4 under the action of vacuum negative pressure in the core tube 4, finally, the gas in the core tube 4 is detected by the gas detection assembly 12 through the sampling tube 9 by opening the sampling valve 8, the sampling tube 9 and the gas detection assembly 12 are always sealed by the sealed box 10, the situation that potential safety hazards are caused by leakage of the virulent gas is avoided, after detection is completed, the gas inlet valve 2 is closed, the first exhaust valve 3 is opened, the second exhaust valve 5 and the sampling valve 8 is opened, the situation that the toxic gas leakage of the gas detection device is further avoided, and the situation that the toxic gas leakage of the gas inlet valve is conveniently detected, the high-leakage detection device is avoided, and the high-detection device is conveniently performed, and the high-detection of the high-detection device when the gas-detection device is performed on the first exhaust valve 5 and the high-detection chamber 10.
Preferably, the gas filling device further comprises an inflation valve 13 and a pressure regulating valve 14, wherein the inflation valve 13 is fixedly installed on the sealed box body 10 and extends into the sealed box body, the gas inlet end of the inflation valve 13 is connected with an external inflation device, the inflation valve 13 is used for filling inert gas into the sealed box body 10, the pressure regulating valve 14 is fixedly installed on the core tube 4 and extends into the sealed box body, the pressure regulating valve 14 is used for regulating the gas pressure difference between the sealed box body 10 and the core tube 4, and the pressure regulating valve 14 can be a needle valve; the inflation valve 13 is convenient for quantitatively filling inert gas into the sealed box body 10, so that safety accidents caused by the reaction of highly toxic gas in the core tube 4 and air are avoided, meanwhile, the internal air pressure value of the sealed box body 10 is convenient to adjust, and the opening and closing degree of the pressure adjusting valve 14 is selectively adjusted, so that the air pressure difference between the core tube 4 and the sealed box body 10 is changed, the air pressure in the core tube 4, the sampling tube 9 and the sealed box body 10 is maintained near the atmospheric pressure, and the reading accuracy and the safety performance of the gas detection assembly 12 are further improved.
Preferably, the gas detection assembly 12 comprises a gas detection tube 121 and a hand pump 122, the gas detection tube 121 is detachably disposed at the exhaust end of the sampling tube 9, the hand pump 122 is detachably disposed at the exhaust end of the gas detection tube 121, a glove is disposed on the sealed box 10, the gas detection tube 121 is a glass tube filled with a sensitive material therein, and can react with a specific gas to generate a color change, the gas detection tube 121 is a disposable product, and the other end of the gas detection tube 121 is connected with a dedicated hand pump 122 or other gas extraction devices; the glove on the sealed box body 10 is convenient for regulating and controlling the gas detection tube 121, the hand pump 122 and the pressure regulating valve 14, the sampling valve 8 is used for sampling and detecting, when the glove is used, the sampling valve 8 is opened, the hand pump 122 is pulled to work for one stroke, so that the gas detection tube 121 extracts one tube of gas, after waiting for three minutes, the color of the gas detection tube 121 is observed to change, and compared with a standard value, the residual amount of the highly toxic gas in the cavity can be known, if the highly toxic gas is found to be residual, the vacuum pump 7 can be started to discharge the gas in the sealed box, and the gas is filled into new nontoxic gas, the complete isolation of the gas and testers is realized in the test process, the personnel safety is ensured, and the effects of simple, convenient, high-precision detection and high safety are achieved.
According to the technical scheme, the air inlet valves 2 are connected with a plurality of pipelines and gate valves so as to respectively control the detection of the highly toxic gases in different closed spaces, and the air inlet valves arranged in the sealed cavity to be detected can be connected with argon or nitrogen to purge the residual highly toxic gases in the cavity and promote the residual highly toxic gases to enter the core pipe 4; after the detection is finished, the gas purging can be used to promote the discharge of residual gas in the gas purging device and reduce the concentration of the highly toxic gas, as shown in fig. 2.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a detection apparatus for virulent gas in airtight space, is provided with door (11), its characterized in that including sealed box (10) on sealed box (10): still include admission valve (2), the top of sealed box (10) is provided with admission valve (2), the bottom of sealed box (10) is provided with first discharge valve (3), the exhaust end of admission valve (2) and the inlet end of first discharge valve (3) pass through core pipe (4) intercommunication, the bottom of sealed box (10) is provided with second discharge valve (5), the exhaust end of second discharge valve (5) is provided with three-way pipe (6) with the exhaust end intercommunication of first discharge valve (3), the exhaust end of three-way pipe (6) is provided with vacuum pump (7), the exhaust end of vacuum pump (7) and the inlet end intercommunication of outside waste gas treatment case, be provided with sample valve (8) on core pipe (4), the exhaust end of sample valve (8) is provided with sampling tube (9), the detachable end of exhausting of sampling tube (9) is provided with gaseous detection subassembly (12).
2. The apparatus for detecting highly toxic gas in a closed space according to claim 1, wherein: the gas filling device is characterized by further comprising an inflation valve (13) and a pressure regulating valve (14), wherein the inflation valve (13) is arranged on the sealed box body (10) and used for filling inert gas into the sealed box body (10), and the pressure regulating valve (14) is arranged on the core pipe (4) and used for regulating the air pressure difference between the sealed box body (10) and the core pipe (4).
3. The apparatus for detecting highly toxic gas in a closed space according to claim 1, wherein: the gas detection assembly (12) comprises a gas detection tube (121) and a hand pump (122), the gas detection tube (121) is detachably arranged at the exhaust end of the sampling tube (9), the hand pump (122) is detachably arranged at the exhaust end of the gas detection tube (121), and gloves are arranged on the sealed box body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210980957.1A CN115356442A (en) | 2022-08-16 | 2022-08-16 | Detection apparatus for virulent gas in airtight space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210980957.1A CN115356442A (en) | 2022-08-16 | 2022-08-16 | Detection apparatus for virulent gas in airtight space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115356442A true CN115356442A (en) | 2022-11-18 |
Family
ID=84033755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210980957.1A Pending CN115356442A (en) | 2022-08-16 | 2022-08-16 | Detection apparatus for virulent gas in airtight space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115356442A (en) |
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2022
- 2022-08-16 CN CN202210980957.1A patent/CN115356442A/en active Pending
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