CN112924623A - Gas sensor waterproof grid for coal mine - Google Patents
Gas sensor waterproof grid for coal mine Download PDFInfo
- Publication number
- CN112924623A CN112924623A CN202110109626.6A CN202110109626A CN112924623A CN 112924623 A CN112924623 A CN 112924623A CN 202110109626 A CN202110109626 A CN 202110109626A CN 112924623 A CN112924623 A CN 112924623A
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- Prior art keywords
- grid
- grid tray
- tray
- waterproof
- stand
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- 239000003245 coal Substances 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000007789 gas Substances 0.000 description 11
- 238000001914 filtration Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Health & Medical Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention provides a gas sensor waterproof grid for a coal mine, and belongs to the technical field of waterproof grids. The lower extreme of stand is fixed with lower floor's grid tray, and the upper grid tray is fixed with upper grid tray in the upper end of stand, and the centre of a circle position of middle floor's grid tray is opened and is had the round hole on the stand between lower floor's grid tray and upper grid tray, and the periphery equipartition of upper grid tray has the opening, and the diameter of lower floor's grid tray is less than the diameter of middle floor's grid tray. The waterproof grid is arranged in the sensor shell, and the inside and the outside of the waterproof grid are communicated in the air inlet direction, so that the sensor can be contacted with the gas to be measured. The gas-permeable and waterproof problem of the continuous online measurement gas sensor is solved, and the performance and technical indexes of the sensor are not influenced.
Description
Technical Field
The invention relates to a gas sensor waterproof grid for a coal mine, and belongs to the technical field of waterproof grids.
Background
In the continuous on-line measurement of gaseous species in the environment, one requirement is that the sensor must be able to contact the gas in the environment (e.g., the atmospheric environment). Besides the measurement objects, such as methane, carbon monoxide, hydrogen sulfide, etc., the environment also contains many impurities, such as harmful gases, water, etc., which affect the measurement, and in addition, in the working environment of the sensor, there may be the situations of water spraying, water splashing, water spraying, etc. The existing method is to add a filtering material or adjust the filtering performance of the filtering material to solve the problem.
Since the measurement object itself is a part of the ambient gas, the protection and the measurement itself are a pair of contradictions.
For example, in the field of coal mine applications, new national standards have increased the protection level of sensors from IP54 to IP65 (see GB 4208-2008 shell protection level (IP code)). These traditional protection methods and techniques have not been well solved and it is difficult to achieve the IP65 level.
Specifically, with the increase in protection level, the problem of waterproofing is solved, but the air permeability is decreased. Some indexes of the sensor, such as response time, measurement error and the like, cannot meet the requirements.
Since the national standards in the field of coal mine applications have increased the protection level of sensors from IP54 to IP65, there has been no effective solution to provide both air-permeable and water-resistant functions. The performance of the sensor is actually sacrificed by the enhanced filtering of the manufacturing enterprises; some protective devices which are complex and large in use have complex structures and large volumes except for increased cost, and the practical application of the sensor is influenced.
The solution which can be waterproof, breathable and low in cost is a current difficult problem.
Disclosure of Invention
The invention aims to solve the problems in the prior art and further provides a gas sensor waterproof grid for a coal mine.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a colliery is with waterproof grid of gas sensor, comprises lower floor's grid tray, intermediate level grid tray, upper grid tray and stand, and the lower extreme of stand is fixed with lower floor's grid tray, and the upper end of stand is fixed with upper grid tray, and the intermediate level grid tray is fixed on the stand between lower floor's grid tray and upper grid tray, and the centre of a circle position of intermediate level grid tray is opened has the round hole, and the periphery equipartition of upper grid tray has the opening, and the diameter of lower floor's grid tray is less than the diameter of.
The invention has the advantages of
The waterproof grid is arranged in the sensor shell, and the inside and the outside of the waterproof grid are communicated in the air inlet direction, so that the sensor can be contacted with the gas to be measured. The gas-permeable and waterproof problem of the continuous online measurement gas sensor is solved, and the performance and technical indexes of the sensor are not influenced.
Drawings
Fig. 1 is a schematic view of the overall structure of a waterproof fence.
Fig. 2 is a plan view of the upper grid.
Fig. 3 is a plan view of an intermediate layer grid.
FIG. 4 is a plan view of the lower grid.
Fig. 5 is a schematic view of a water barrier enclosed within a sensor housing.
The reference numeral in the figure, 1 is lower floor grid plate, 2 is middle floor grid plate, 3 is upper strata grid plate, 4 is the stand, 5 is the sensor shell, 6 is the round hole, 7 is the opening.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1-5, the waterproof grid of a gas sensor for coal mine related to of this embodiment comprises lower floor grid 1, intermediate level grid 2, upper grid 3 and stand 4, the lower extreme of stand 4 is fixed with lower floor grid 1, the upper end of stand 4 is fixed with upper grid 3, intermediate level grid 2 is fixed on stand 4 between lower floor grid 1 and upper grid 3, the centre of a circle position of intermediate level grid 2 is opened has round hole 6, the periphery equipartition of upper grid 3 has opening 7, the diameter of lower floor grid 1 is less than the diameter of intermediate level grid 2.
The number of the pillars 4 is three or four. If three upright columns 4 are distributed in a regular triangle, and if four upright columns 4 are distributed in a square.
Three gaps 7, four gaps 7, five gaps 7 or six gaps 7 are uniformly distributed on the periphery of the upper grid plate 3.
The fixing in this embodiment may be bonding or injection molding.
The embodiment is a three-layer waterproof grid, and each layer is ventilated, so that the contact between gas and the sensor is smooth, and the performance and technical indexes of the sensor are not influenced.
But each layer is blocked from the aspect of water flow (impact), so that the impact strength of the water flow can be effectively reduced.
After water flow impacts and enters the shell, the water flow is firstly blocked by the lower layer grid plate 1, redundant water flow can enter the second layer, namely the middle layer grid plate 2, from the edge of the lower layer grid plate 1, but is blocked by the middle layer grid plate 2, at the moment, redundant water flow can only enter from the round hole 6 in the middle of the middle layer grid plate 2, but also meets the blocking of the upper layer grid plate 3, and finally, a small amount of water with weak impact force can enter the shell from the edge of the upper layer grid plate 3, and if the sensor is also protected by some simple filtering materials, the water cannot contact the sensor.
The water entering the shell can be discharged by itself due to gravity without accumulation, thus perfectly solving the problems provided by the invention.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a waterproof grid of gas sensor for colliery, a serial communication port, by lower floor grid tray (1), intermediate level grid tray (2), upper grid tray (3) and stand (4) are constituteed, the lower extreme of stand (4) is fixed with lower floor grid tray (1), the upper end of stand (4) is fixed with upper grid tray (3), intermediate level grid tray (2) are fixed on stand (4) between lower floor grid tray (1) and upper grid tray (3), round hole (6) have been opened to the centre of a circle position of intermediate level grid tray (2), the periphery equipartition of upper grid tray (3) has opening (7), the diameter of lower floor grid tray (1) is less than the diameter of intermediate level grid tray (2).
2. The gas sensor waterproof fence for coal mines as recited in claim 1, wherein the number of the pillars (4) is three or four.
3. The gas sensor waterproof fence for the coal mine as claimed in claim 1, wherein the periphery of the upper grid plate (3) is uniformly provided with three gaps (7), or four gaps (7), or five gaps (7), or six gaps (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109626.6A CN112924623A (en) | 2021-01-26 | 2021-01-26 | Gas sensor waterproof grid for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109626.6A CN112924623A (en) | 2021-01-26 | 2021-01-26 | Gas sensor waterproof grid for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112924623A true CN112924623A (en) | 2021-06-08 |
Family
ID=76166820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110109626.6A Pending CN112924623A (en) | 2021-01-26 | 2021-01-26 | Gas sensor waterproof grid for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112924623A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924614A (en) * | 2021-01-26 | 2021-06-08 | 山西美安科技有限公司 | Method for adjusting zero point of thermocatalytic methane sensor in methane environment |
| CN113884622A (en) * | 2021-09-17 | 2022-01-04 | 煤炭科学技术研究院有限公司 | Protective air chamber structure for sensitive element of mining sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105464A (en) * | 2012-12-20 | 2013-05-15 | 江苏三恒科技股份有限公司 | Infrared methane sensor and water vapor resisting method |
| CN204952580U (en) * | 2015-09-28 | 2016-01-13 | 湖南科技大学 | Vertical air exit wet -type grid tray of ventilating shaft filters dust removal and desulfurization device |
| CN208444415U (en) * | 2018-07-25 | 2019-01-29 | 浙江创力电子股份有限公司 | Combustible gas alarm for power plant security protection switchs |
| CN210109088U (en) * | 2019-06-27 | 2020-02-21 | 重庆光可巡科技有限公司 | Gas sensor probe waterproof construction |
| CN110942597A (en) * | 2019-12-16 | 2020-03-31 | 西安汇富融通信息科技有限责任公司 | Prevent waterproof combustible gas alarm of jam |
-
2021
- 2021-01-26 CN CN202110109626.6A patent/CN112924623A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105464A (en) * | 2012-12-20 | 2013-05-15 | 江苏三恒科技股份有限公司 | Infrared methane sensor and water vapor resisting method |
| CN204952580U (en) * | 2015-09-28 | 2016-01-13 | 湖南科技大学 | Vertical air exit wet -type grid tray of ventilating shaft filters dust removal and desulfurization device |
| CN208444415U (en) * | 2018-07-25 | 2019-01-29 | 浙江创力电子股份有限公司 | Combustible gas alarm for power plant security protection switchs |
| CN210109088U (en) * | 2019-06-27 | 2020-02-21 | 重庆光可巡科技有限公司 | Gas sensor probe waterproof construction |
| CN110942597A (en) * | 2019-12-16 | 2020-03-31 | 西安汇富融通信息科技有限责任公司 | Prevent waterproof combustible gas alarm of jam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924614A (en) * | 2021-01-26 | 2021-06-08 | 山西美安科技有限公司 | Method for adjusting zero point of thermocatalytic methane sensor in methane environment |
| CN113884622A (en) * | 2021-09-17 | 2022-01-04 | 煤炭科学技术研究院有限公司 | Protective air chamber structure for sensitive element of mining sensor |
| CN113884622B (en) * | 2021-09-17 | 2023-11-10 | 煤炭科学技术研究院有限公司 | Protective air chamber structure of sensitive element of mining sensor |
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Application publication date: 20210608 |