CN114136913B - Gas detector drainage filter device with remote calibration function - Google Patents
Gas detector drainage filter device with remote calibration function Download PDFInfo
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- CN114136913B CN114136913B CN202111298193.XA CN202111298193A CN114136913B CN 114136913 B CN114136913 B CN 114136913B CN 202111298193 A CN202111298193 A CN 202111298193A CN 114136913 B CN114136913 B CN 114136913B
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- shell
- plate
- guide post
- gas detector
- sliding plate
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- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 14
- 210000001503 joint Anatomy 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 28
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 241000256626 Pterygota <winged insects> Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
- G01N21/3518—Devices using gas filter correlation techniques; Devices using gas pressure modulation techniques
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
- A01M29/34—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water specially adapted for insects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Insects & Arthropods (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Pest Control & Pesticides (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geometry (AREA)
- Birds (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a gas detector drainage filtering device with a remote calibration function, which comprises a shell, a sliding plate, a fixed plate and a guide post plate, wherein the shell is formed by butt joint of two semicircular column type curved surface structures; the gas detector hydrophobic filter device is in a central symmetry structure; the inner side of the shell is provided with a sliding plate; a pressure spring is arranged between the sliding plate and the shell; the outer side of the shell is provided with a guide post plate, and two guide posts of the guide post plate penetrate through the shell and are in butt joint with two guide posts of the guide post plate at the other side through screws; a fixed plate is arranged in the shell, and two guide posts on the fixed plate penetrate through the sliding plate and are communicated with a pipeline of the guide post plate; the outer side of the guide post plate is connected with a calibration joint. The device not only can effectively block external dust and rainwater, but also can be directly used for calibration, and the self-contained cylinder structure system can also realize a remote automatic calibration function, thereby remarkably improving the working efficiency and effectively guaranteeing the safety of field operation.
Description
Technical Field
The invention relates to the technical field of gas detector accessories, in particular to a gas detector drainage filter device with a remote calibration function.
Background
Industrial infrared gas detectors, which detect gas concentrations using infrared optical principles, are typically installed in outdoor open air environments. Because the accumulation of dust and rainwater can cause light path to block or window to pollute, and then influence the detection of gas concentration, so can be equipped with hydrophobic filter equipment (also known as dustproof rain-proof cover) on the detector for the monitoring when the normal exchange of gas is not influenced in the dust and rain-proof of certain degree, from taking breathing structure simultaneously.
Most of the hydrophobic filter devices are not provided with calibration joints, when the calibration is required, the calibration can be carried out only by disassembling and replacing the device with a special calibration fitting on site, and after the calibration is finished, the previously disassembled hydrophobic filter device is assembled again for recovery.
Even a small amount of hydrophobic filter device is from taking the calibration joint, also can't realize accurate calibration because the breathing structure of device from taking can cause inside and external continuous exchange gas, and inside gas concentration can't accumulate and reach the target value of calibration gas, and the calibration signal loss is great to can't realize accurate calibration.
In addition, many on-site gas detectors are installed in areas high above the ground, and the areas belong to dangerous places, so that maintenance personnel have great danger and complexity in on-site ventilation calibration work. And the remote calibration can well solve the problem.
Therefore, the invention provides a gas detector drainage filter device with a remote calibration function, which solves the pain points together.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the gas detector hydrophobic filter device with the remote calibration function, which is suitable for the long-optical-path infrared gas detector, solves the defects of the prior art, integrates dust prevention, rain prevention, calibration and remote calibration, improves the operation efficiency and ensures the safety of on-site operation.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the gas detector drainage filtering device with the remote calibration function comprises a shell, a sliding plate, a fixed plate and a guide pillar plate, wherein the shell is formed by butt joint of two semicircular column type curved surface structures; the gas detector hydrophobic filter device is in a central symmetry structure; a sliding plate is arranged on the inner side of the shell; a pressure spring is arranged between the sliding plate and the shell; the outer side of the shell is provided with a guide post plate, and two guide posts of the guide post plate penetrate through the shell and are in butt joint with two guide posts of the guide post plate at the other side through screws; a fixed plate is arranged in the shell, and two guide posts on the fixed plate penetrate through the sliding plate and are communicated with a pipeline of the guide post plate; and the outer side of the guide post plate is connected with a calibration joint.
Further, an O-shaped ring and a throttling screw are arranged on the fixing plate.
Further, the sliding plate, the fixed plate, the O-shaped ring and the throttling screw form a cylinder functional structure.
Further, the inner diameter of the air inlet hole of the throttling screw is larger than the inner diameter of the air outlet.
Further, a metal dust screen is arranged at the hole of the shell to prevent water drops from splashing into the shell and large-particle substances such as flying insects from entering the shell.
Further, a sealing gasket is arranged on one side, close to the shell, of the sliding plate.
Further, the connecting surface of the shell is provided with an air leakage hole.
The beneficial effects of the invention are as follows:
the device not only can effectively block external dust and rainwater, but also can be directly used for calibration, and the self-contained cylinder structure system can also realize a remote automatic calibration function. Namely, can realize the following steps: when the device works normally, gas sampling is carried out with the outside, and when in remote calibration, the special cylinder structure is utilized to enable the detection air chamber to be a closed cavity, and only calibration gas can be received, so that the hundred percent response calibration gas is realized, and the accurate calibration function is completed; the device integrates dustproof, rainproof, calibration and remote calibration, remarkably improves the operation efficiency and effectively ensures the safety of field operation.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
FIG. 2 is a cross-sectional view of the device of the present invention;
FIG. 3 is a schematic view of the structure of a fixing plate in the device of the present invention;
FIG. 4 is a schematic diagram of the device of the present invention in a normal testing state;
FIG. 5 is a schematic diagram of the apparatus of the present invention in a remote calibration state;
fig. 6 is a schematic view of an application of the device of the present invention.
In the figure: the device comprises a shell, a sliding plate, a 3-pressure spring, a 4-fixed plate, a 5-guide pillar plate, a 6-calibration joint, a 7-O-shaped ring, 8-throttling screws, 9-screws, a 10-metal dustproof net, 11-vent holes, 12-air chamber cavities, 13-air cylinder functional structures, 14-calibration air cylinders, 15-air pipes and 16-air detectors.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment 1 of the hydrophobic filter device of the gas detector with the remote calibration function is shown by referring to figures 1-6, and comprises a shell 1, a sliding plate 2, a fixed plate 4 and a guide post plate 5, wherein the shell 1 is formed by butt joint of two semi-cylindrical curved surface structures, and a gas leakage hole 11 is formed in a connecting surface of the shell 1; the gas detector hydrophobic filter device is in a central symmetry structure. The inside of the shell 1 is provided with a sliding plate 2, and one side of the sliding plate 2 close to the shell 1 is provided with a sealing gasket. A pressure spring 3 is arranged between the sliding plate 2 and the shell 1; the outer side of the shell 1 is provided with a guide post plate 5, and two guide posts of the guide post plate 5 penetrate through the shell 1 and are in butt joint with two guide posts of the guide post plate 5 at the other side through screws 9; a fixed plate 4 is arranged in the shell 1, and two guide posts on the fixed plate 4 penetrate through the sliding plate 2 and are communicated with a pipeline of the guide post plate 5; the outer side of the guide post plate 5 is connected with a calibration joint 6. Wherein, the fixed plate 4 and the guide post plate 5 are provided with 2 guide posts, the guide posts have the assembly function, and a special air passage structure is arranged inside the guide posts.
Specifically, an O-shaped ring 7 and a throttle screw 8 are arranged on the fixed plate 4, wherein the inner diameter of an air inlet hole of the throttle screw 8 is larger than the inner diameter of an air outlet. The sliding plate 2, the fixed plate 4, the O-ring 7 and the throttle screw 8 form a cylinder function structure 13.
The hole of the shell 1 is provided with a metal dust screen 10 for preventing water drops from splashing into the shell and large particle substances such as winged insects from entering the shell.
The assembly method of the hydrophobic filter device of the gas detector provided by the invention comprises the following steps:
step 1: the guide post plate 5 passes through the through hole of the shell 1, at the moment, the curved surface of the shell 1 and two guide posts of the guide post plate 5 have certain friction tension, and the guide post plate cannot be scattered after being connected;
step 2: the fixed plate 4 is provided with an O-shaped ring 7 and a throttling screw 8 to form a fixed plate assembly structure. Two guide posts of the fixed plate 4 penetrate through the sliding plate 2; the central position of this assembly forms a cylinder function 13;
step 3: the compression spring 3 is embedded in the center of the step 1 and the step 2, and is assembled into a whole in an opposite inserting way;
step 4: screwing the calibration joint 6 onto the guide post plate 5;
step 5: the two semi-finished products are screwed together by the guide posts butted by the left guide post plate 5 and the right guide post plate 5 by the screws 9 in a central symmetry mode, and the shells are butted into a whole circle.
The working principle of the remote calibration of the hydrophobic filter device is as follows:
the hydrophobic filtering device is arranged on the front side of the gas detector 16, and under the action of the pressure spring 3 in normal operation, the shell 1 and the sliding plate 2 are in a separated state, and the gas in the external environment can freely pass through a gap between the metal dustproof net 10 of the shell 1 and the sliding plate 2 and freely diffuse into the air chamber cavity 12, so that the purpose of detecting the gas in the external environment is realized, and the device is shown in fig. 4.
For remote calibration, as shown in fig. 5:
(1) In the calibration state, the calibration joint 6 is communicated with the calibration gas cylinder 14 through a gas pipe 15, and target gas with certain pressure and flow rate is introduced.
(2) The calibration gas enters the cylinder functional structure 13 formed by the sliding plate 2 and the fixed plate component through the pipelines of the calibration joint 6 and the guide post plate 5, the throttle screw 8 plays a role of a throttle valve, and when the air pressure reaches a certain value, the gas is allowed to enter the air chamber cavity 12 from the cylinder functional structure 13 at a fixed flow rate.
(3) Because the air inlet inner diameter of the throttling screw 8 is larger than the air outlet inner diameter, the air pressure in the cylinder functional structure 13 is gradually increased, the sliding plate 2 is pushed to overcome the acting force of the pressure spring 3 until the sliding plate is clung to the shell 1, the gap of the metal dust screen 10 of the shell 1 is blocked, a certain degree of sealing is formed, and thus, a relatively closed calibration cavity is integrally formed, and the interference of external wind speed can be avoided.
(4) The calibration gas continues to be introduced, and the gas in the cylinder functional structure 13 continuously passes through the throttling screw 8 on the fixed plate assembly and enters the air chamber cavity 12. Along with the gradual increase of the air pressure in the air chamber cavity 12, when the air pressure reaches a certain degree, the ambient air in the original air chamber cavity can be discharged through the air leakage holes 11 at the joint of the two semicircular shells and gradually replaced by the calibration gas, and the accuracy of the calibration of the instrument can be ensured because the pressure of the external gas is smaller than the pressure in the air chamber cavity 12.
(5) After the calibration is finished, the calibration gas is removed, the air pressure in the cylinder functional structure 13 is reduced, the action of the pressure spring 3 is recovered, the shell 1 and the sliding plate 2 are gradually separated, and the external gas can freely pass through the gap between the metal dust screen 10 of the shell 1 and the sliding plate 2 and diffuse into the cavity to recover to a normal working state.
The working principle of the hydrophobic filtering device of the invention is as follows:
(1) The pore of the shell 1 is covered with a layer of 80 mesh metal dustproof net 10, so that large particle substances such as water drops or flying insects can be prevented from entering. The metal dust screen 10 is made of S316 stainless steel, so that the metal dust screen can be effectively preserved and the service life of the metal dust screen is prolonged.
(2) The shell 1 is designed to be of a cylindrical curved surface structure, and under horizontal installation, even if external rainwater infiltrates, the rainwater can flow to the bottom along the curved surface groove between the outer wall of the metal dust screen 10 and a shell gap, and cannot enter the central air chamber cavity 12.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The gas detector drainage filtering device with the remote calibration function comprises a shell (1), a sliding plate (2), a fixed plate (4) and a guide post plate (5), and is characterized in that the shell (1) is formed by butt joint of two semi-cylindrical curved surface structures; the gas detector hydrophobic filter device is in a central symmetry structure; a sliding plate (2) is arranged on the inner side of the shell (1); a pressure spring (3) is arranged between the sliding plate (2) and the shell (1); the outer side of the shell (1) is provided with a guide post plate (5), and two guide posts of the guide post plate (5) penetrate through the shell (1) and are in butt joint with two guide posts of the guide post plate (5) at the other side through screws (9); the inside of the shell (1) is provided with a fixed plate (4), and the fixed plate (4)
The two guide posts pass through the sliding plate (2) and are communicated with the pipeline of the guide post plate (5); the outer side of the guide post plate (5) is connected with a calibration joint (6).
2. The gas detector hydrophobic filter arrangement according to claim 1, characterized in that the fixing plate (4) is provided with an O-ring (7) and a throttle screw (8).
3. The gas detector hydrophobic filter arrangement according to claim 2, characterized in that the sliding plate (2), the fixing plate (4), the O-ring (7) and the throttle screw (8) constitute a cylinder function (13).
4. The gas detector hydrophobic filter arrangement according to claim 2, characterized in that the inlet bore diameter of the throttle screw (8) is larger than the outlet bore diameter.
5. A gas detector hydrophobic filter arrangement according to claim 1, characterised in that the housing (1) is provided with a metal dust screen (10) at the aperture for preventing water droplets from splashing into and large particulate matter from entering.
6. The hydrophobic filter device of a gas detector according to claim 1, characterized in that a sealing gasket is arranged on the side of the sliding plate (2) close to the housing (1).
7. The hydrophobic filter device of a gas detector according to claim 1, characterized in that the connection surface of the housing (1) is provided with a venting hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298193.XA CN114136913B (en) | 2021-11-04 | 2021-11-04 | Gas detector drainage filter device with remote calibration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298193.XA CN114136913B (en) | 2021-11-04 | 2021-11-04 | Gas detector drainage filter device with remote calibration function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114136913A CN114136913A (en) | 2022-03-04 |
| CN114136913B true CN114136913B (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111298193.XA Active CN114136913B (en) | 2021-11-04 | 2021-11-04 | Gas detector drainage filter device with remote calibration function |
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| Country | Link |
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| CN (1) | CN114136913B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155261A (en) * | 2014-08-27 | 2014-11-19 | 无锡格林通安全装备有限公司 | Gas calibration device of infrared gas detector |
| CN106680235A (en) * | 2017-02-15 | 2017-05-17 | 西安硅光电子科技有限公司 | Active circulating gas suction type infrared multi-light path gas concentration measurement device |
| CN206696225U (en) * | 2017-04-28 | 2017-12-01 | 无锡格林通安全装备有限公司 | Detector for poisonous gas demarcates joint |
| KR101879614B1 (en) * | 2018-04-26 | 2018-07-18 | 동우옵트론 주식회사 | Device for setting reference and calibrating measurement of the optical type gas analyzer |
| KR101907393B1 (en) * | 2017-06-29 | 2018-10-15 | 한국교통대학교산학협력단 | Non-dispersive infrared sensor deposited hydrophobic thin film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7257987B2 (en) * | 2000-01-25 | 2007-08-21 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Portland State University | Method and apparatus for sample analysis |
-
2021
- 2021-11-04 CN CN202111298193.XA patent/CN114136913B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155261A (en) * | 2014-08-27 | 2014-11-19 | 无锡格林通安全装备有限公司 | Gas calibration device of infrared gas detector |
| CN106680235A (en) * | 2017-02-15 | 2017-05-17 | 西安硅光电子科技有限公司 | Active circulating gas suction type infrared multi-light path gas concentration measurement device |
| CN206696225U (en) * | 2017-04-28 | 2017-12-01 | 无锡格林通安全装备有限公司 | Detector for poisonous gas demarcates joint |
| KR101907393B1 (en) * | 2017-06-29 | 2018-10-15 | 한국교통대학교산학협력단 | Non-dispersive infrared sensor deposited hydrophobic thin film |
| KR101879614B1 (en) * | 2018-04-26 | 2018-07-18 | 동우옵트론 주식회사 | Device for setting reference and calibrating measurement of the optical type gas analyzer |
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| Publication number | Publication date |
|---|---|
| CN114136913A (en) | 2022-03-04 |
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