CN219456089U - External protection structure of gas sensor - Google Patents
External protection structure of gas sensor Download PDFInfo
- Publication number
- CN219456089U CN219456089U CN202320152190.3U CN202320152190U CN219456089U CN 219456089 U CN219456089 U CN 219456089U CN 202320152190 U CN202320152190 U CN 202320152190U CN 219456089 U CN219456089 U CN 219456089U
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- China
- Prior art keywords
- protective cover
- gas sensor
- protection casing
- utility
- sensor according
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- 230000001681 protective effect Effects 0.000 claims abstract description 62
- 238000005245 sintering Methods 0.000 claims description 14
- 238000004663 powder metallurgy Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000001514 detection method Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 28
- 239000000523 sample Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an external protection structure of a gas sensor, and relates to the technical field of gas sensor detection devices. The utility model comprises a protective shell arranged at the bottom of a fixed seat, a protective cover arranged outside the fixed seat, wherein the protective cover and the protective shell are in threaded connection with the fixed seat, a first air hole is formed in the surface of the protective cover, a second air hole is formed at the bottom of the protective cover, and the number of the second air holes is the same as that of the first air holes. According to the utility model, the first ventilation holes are formed in the surface of the protective cover, the second ventilation holes are formed in the bottom of the protective cover, the square sheets are arranged at the bottom of the protective cover and are propped against the bottom of the protective cover, the space between the protective cover and the bottom of the protective cover is increased, the ventilation capacity can be increased through the cooperation of the first ventilation holes, the second ventilation holes and the square sheets, the detection precision of the gas sensor is ensured, and meanwhile, the protective cover can prevent water from entering the protective cover, so that the practicability of the patent is improved.
Description
Technical Field
The utility model belongs to the technical field of gas sensor detection devices, and particularly relates to an external protection structure of a gas sensor.
Background
A gas sensor is a transducer that converts a certain gas volume fraction into a corresponding electrical signal. The probe conditions the gas sample with the gas sensor, typically including filtering out impurities and interfering gases, drying or refrigeration process meter display.
The existing electronic gas sensing probe mainly burns the combustible gas entering the gas chamber, and the detected gas concentration is reflected by detecting the resistance value change of the sensitive element in the probe. Therefore, the protection of the sensor outside plays a vital role in the requirement of gas detection precision. Although the electronic sensor can reach the protection grade of IP65 in the aspect of protection, in practical application, the condition that a sintering net in a protection structure is blocked by water often occurs, the operation of the sensor can not be recovered until the blocked water vapor is evaporated through the release of internal combustion heat, and the process is usually very slow, so that the operation reliability of the sensor can be directly affected.
In the laser gas sensing probe, a protection structure usually uses a sintering net or powder metallurgy to prevent dust, and once the protection structure is sprayed with water, the water content in the sintering net or powder metallurgy in the protection structure is saturated to form a water film, external gas hardly enters the probe, gas accumulated in the probe is also hardly diffused out rapidly, and even false alarm can be caused. Because the laser gas sensing probe can not burn the combustible gas to generate heat by heating and evaporate the water film by heating like the electronic gas sensing probe, the laser gas sensing probe is easily affected by water vapor and dust, and the detection accuracy is reduced, and therefore, the external protection structure of the gas sensor is provided.
Disclosure of Invention
The utility model aims to provide an external protection structure of a gas sensor, which solves the existing problems: in practical application, once the protective structure is sprayed with water, the condition that a sintering net in the protective structure is blocked by water often occurs, the blocked water vapor is evaporated until the internal combustion heat is released, the sensor can be restored to work, and the process is very slow generally, so that the working reliability of the sensor can be directly influenced.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to an external protection structure of a gas sensor, which comprises a protection shell arranged at the bottom of a fixed seat, a protection cover arranged outside the fixed seat, wherein the protection cover and the protection shell are both in threaded connection with the fixed seat, a first air hole is formed in the surface of the protection cover, a second air hole is formed in the bottom of the protection cover, the number of the second air holes is the same as that of the first air holes, a first thread groove is formed in the inner wall of the protection cover, a square sheet is arranged at the bottom of the protection cover, and the square sheet is fixedly connected with the protection cover.
Further, the surface of fixing base is provided with first screw thread and second screw thread, first screw thread and first thread groove threaded connection, the ring channel has been seted up to the bottom of fixing base, the inside of ring channel is provided with the powder metallurgy piece.
Further, a second thread groove is formed in the inner wall of the protective shell, and the second thread groove is in threaded connection with the second thread.
Further, a sealing ring and a sintering net are arranged in the protective shell, and the sealing ring abuts against the bottom of the fixing seat.
Further, an inclined plane is formed in the bottom of the protective shell, and the bottom of the protective shell abuts against the square sheet.
Further, the powder metallurgy sheets and the sintering net are round, and the radii of the powder metallurgy sheets and the sintering net are the same.
Further, the sealing ring is made of rubber, and the radius of the top of the protective cover is larger than that of the bottom of the protective cover.
Further, four square sheets are arranged, and the four square sheets are identical in shape and size.
The utility model has the following beneficial effects:
1. according to the utility model, the first ventilation holes are formed in the surface of the protective cover, the second ventilation holes are formed in the bottom of the protective cover, the square sheets are arranged at the bottom of the protective cover and are propped against the bottom of the protective cover, the space between the protective cover and the bottom of the protective cover is increased, the ventilation capacity can be increased through the cooperation of the first ventilation holes, the second ventilation holes and the square sheets, the detection precision of the gas sensor is ensured, and meanwhile, the protective cover can prevent water from entering the protective cover, so that the practicability of the patent is improved.
2. According to the utility model, the first thread groove is formed in the inner wall of the protective cover, the second thread groove is formed in the inner wall of the protective cover, and the first thread and the second thread are formed on the surface of the fixing seat, so that the protective cover and the protective cover are in threaded connection with the fixing seat, and further the later disassembly and maintenance are facilitated.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an exploded view of the overall structure of the present utility model;
FIG. 3 is a schematic cross-sectional view of a shield according to the present utility model;
FIG. 4 is a schematic cross-sectional view of a protective shell according to the present utility model;
fig. 5 is an exploded view of the fixing base of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a protective cover; 2. a fixing seat; 3. a first ventilation hole; 4. a protective shell; 5. a first thread; 6. a first thread groove; 7. a second ventilation hole; 8. square pieces; 9. a seal ring; 10. sintering the net; 11. an inclined plane; 12. powder metallurgy flakes; 13. an annular groove; 14. a second thread groove; 15. and a second thread.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the utility model is an external protection structure of a gas sensor, which comprises a protection shell 4 arranged at the bottom of a fixed seat 2, a protection cover 1 arranged outside the fixed seat 2, wherein the protection cover 1 and the protection shell 4 are both in threaded connection with the fixed seat 2, a first ventilation hole 3 is arranged on the surface of the protection cover 1, a second ventilation hole 7 is arranged at the bottom of the protection cover 1 simultaneously through arranging the first ventilation hole 3 on the surface of the protection cover 1, a square piece 8 is arranged at the bottom of the protection cover 1, the square piece 8 is propped against the bottom of the protection shell 4, the space between the protection shell 4 and the bottom of the protection cover 1 is increased, the ventilation capacity can be increased through the cooperation of the first ventilation hole 3, the second ventilation hole 7 and the square piece 8, the detection precision of the gas sensor is ensured, meanwhile, the protection cover 1 can prevent water from entering the protection shell, and the practicability of the patent is improved, the bottom of the protective cover 1 is provided with second air holes 7, the quantity of the second air holes 7 is the same as that of the first air holes 3, the inner wall of the protective cover 1 is provided with a first thread groove 6, the bottom of the protective cover 1 is provided with a square sheet 8, the square sheet 8 is fixedly connected with the protective cover 1, the surface of the fixed seat 2 is provided with a first thread 5 and a second thread 15, the first thread 5 is in threaded connection with the first thread groove 6, the bottom of the fixed seat 2 is provided with an annular groove 13, the inside of the annular groove 13 is provided with a powder metallurgy sheet 12, the inner wall of the protective cover 4 is provided with a second thread groove 14, the second thread groove 14 is in threaded connection with the second thread 15, the inside of the protective cover 4 is provided with a sealing ring 9 and a sintering net 10, the sealing ring 9 is propped against the bottom of the fixed seat 2, the bottom of the protective cover 4 is provided with an inclined plane 11, the bottom of the protective cover 4 is propped against the square sheet 8, the powder metallurgy sheet 12 and the sintering net 10 are round, the radius of the powder metallurgy sheet 12 is the same as that of the sintering net 10, the sealing ring 9 is made of rubber, the radius of the top of the protective cover 1 is larger than that of the bottom, the square sheets 8 are provided with four square sheets 8, and the shapes and the sizes of the four square sheets 8 are the same.
One specific application of this embodiment is: when the protective cover is used, firstly, the sealing ring 9 is placed in the protective shell 4, then the protective shell 4 is in threaded connection with the second threads 15 on the surface of the fixed seat 2 through the second thread grooves 14, the bottom of the fixed seat 2 is propped against the sealing ring 9, the sealing effect is achieved, afterwards, the top of the fixed seat 2 is connected with the transmitter, and finally, the protective cover 1 is in threaded connection with the first threads 5 on the surface of the fixed seat 2 through the first thread grooves 6, and the bottom of the protective shell 4 is propped against the square piece 8 at the bottom of the protective cover 1; when the gas sensor is used, air can enter through the first air holes 3 on the surface of the protective cover 1 and the second air holes 7 at the bottom of the protective cover 1, when water is sprayed onto the gas sensor, the protective cover 1 can block the water outside, and a small amount of water entering the protective cover 1 can flow out through the second air holes 7.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The utility model provides an outside protective structure of gas sensor, includes fixing base (2), its characterized in that: the bottom of fixing base (2) is provided with protecting crust (4), the outside of fixing base (2) is provided with protection casing (1), protection casing (1) and protection casing (4) all with fixing base (2) threaded connection, first bleeder vent (3) have been seted up on the surface of protection casing (1), the bottom of protection casing (1) begins to have second bleeder vent (7), second bleeder vent (7) are the same with first bleeder vent (3) quantity, protection casing (1) inner wall is provided with first thread groove (6), protection casing (1) bottom is provided with square piece (8), square piece (8) and protection casing (1) fixed connection.
2. An exterior guard structure for a gas sensor according to claim 1, wherein: the surface of fixing base (2) is provided with first screw thread (5) and second screw thread (15), first screw thread (5) and first thread groove (6) threaded connection, ring channel (13) have been seted up to the bottom of fixing base (2), the inside of ring channel (13) is provided with powder metallurgy piece (12).
3. An exterior guard structure for a gas sensor according to claim 1, wherein: the inner wall of the protective shell (4) is provided with a second thread groove (14), and the second thread groove (14) is in threaded connection with a second thread (15).
4. An exterior guard structure for a gas sensor according to claim 1, wherein: the inside of the protective shell (4) is provided with a sealing ring (9) and a sintering net (10), and the sealing ring (9) is propped against the bottom of the fixed seat (2).
5. An exterior guard structure for a gas sensor according to claim 1, wherein: an inclined plane (11) is formed in the bottom of the protective shell (4), and the bottom of the protective shell (4) is propped against the square sheet (8).
6. An exterior guard structure of a gas sensor according to claim 2, wherein: the powder metallurgy sheets (12) and the sintering net (10) are round, and the radii of the powder metallurgy sheets (12) and the sintering net (10) are the same.
7. The exterior guard structure of a gas sensor according to claim 4, wherein: the sealing ring (9) is made of rubber, and the radius of the top of the protective cover (1) is larger than that of the bottom.
8. An exterior guard structure for a gas sensor according to claim 1, wherein: four square sheets (8) are arranged, and the four square sheets (8) are identical in shape and size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320152190.3U CN219456089U (en) | 2023-02-08 | 2023-02-08 | External protection structure of gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320152190.3U CN219456089U (en) | 2023-02-08 | 2023-02-08 | External protection structure of gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219456089U true CN219456089U (en) | 2023-08-01 |
Family
ID=87421308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320152190.3U Active CN219456089U (en) | 2023-02-08 | 2023-02-08 | External protection structure of gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219456089U (en) |
-
2023
- 2023-02-08 CN CN202320152190.3U patent/CN219456089U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |