CN220438273U - Gas sensor protection cover - Google Patents
Gas sensor protection cover Download PDFInfo
- Publication number
- CN220438273U CN220438273U CN202321681643.8U CN202321681643U CN220438273U CN 220438273 U CN220438273 U CN 220438273U CN 202321681643 U CN202321681643 U CN 202321681643U CN 220438273 U CN220438273 U CN 220438273U
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- sensor
- bin
- ring
- pressing ring
- circuit board
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- 238000007789 sealing Methods 0.000 claims abstract description 54
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 15
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
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Abstract
The utility model discloses a gas sensor protection cover which comprises a plug, a first pressing ring, a sealing ring, a sensor bin, a second pressing ring, a filter screen and an air chamber bin, wherein an annular boss is arranged in the sensor bin, the sealing ring is arranged on the annular boss, the first pressing ring is detachably arranged in the sensor bin, when the gas sensor protection cover is used, a circuit board and a sensor body are both arranged in the sensor bin, one side of the circuit board is abutted with the sealing ring, the first pressing ring is arranged on the other side of the circuit board, and the circuit board is abutted against the sealing ring by the first pressing ring. The technical effects achieved are as follows: the annular boss is better in sealing performance by combining the sealing ring and the first pressing ring, can form a good sealing and blocking effect, can effectively ensure the sealing performance and prevent the tested gas from entering a circuit system above the circuit board, thereby meeting the sealing and explosion-proof requirements; the sensor bin and the air chamber bin are mutually independent, and the filter screen or the circuit board and the sensor body can be detached independently, so that replacement or overhaul of parts is facilitated.
Description
Technical Field
The utility model relates to the technical field of gas sensors, in particular to a gas sensor protective cover.
Background
As shown in fig. 12, the protective housing 1 of the gas sensor used in the prior art has a cylindrical integral structure, when in assembly, the filter screen 8 is firstly arranged in the protective housing 17, the edge of the filter screen 8 is abutted against the supporting table in the protective housing 17, then the filter screen pressing ring 18 is arranged, the bottom of the filter screen pressing ring 18 is abutted against the filter screen 8, the sealing ring 5 is arranged, and the sealing ring 5 is positioned at the top of the filter screen pressing ring 18; connecting the circuit board 3 with the sensor body 4, then installing the measuring end of the sensor body 4 downwards into the protective shell 1, and enabling the circuit board 3 to be abutted with the sealing ring 5; finally, the top of the protective shell 1 is provided with the plug 1 and is screwed up, so that the bottom of the plug 1 presses the circuit board 3, and the circuit board 3, the sealing ring 5, the filter screen pressing ring 18 and the filter screen 8 are sequentially abutted against each other.
In addition, in the process of installing and dismantling the gas sensor protection cover, only the screw thread assembly of the plug 1 and the protection shell 1 achieves the fastening effect, and a circuit board, a sensor, a filter screen, a pressing ring and a sealing ring in the protection shell 1 are in a loose state in the process of unscrewing the plug during maintenance, so that the gas sensor protection cover is very easy to fall off and can not determine which part has a problem in the first time; meanwhile, the sensor has certain life and needs periodic replacement, and the protective housing of the existing sensor protective cover adopts an integrated structure, and a circuit board, a sensor, a filter screen and the like are all installed in the housing in sequence, so that the whole protective cover and the internal structure are required to be detached in sequence when the sensor or the filter screen is replaced, the operation is very complicated, and the maintenance or the replacement of parts is inconvenient.
Disclosure of Invention
Therefore, the utility model provides a gas sensor protective cover, which aims to solve the problems of poor internal tightness and complex operation of replacing parts of the sensor protective cover in the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions:
according to the first aspect of the utility model, a gas sensor protection cover comprises a plug, a first pressing ring, a sealing ring, a sensor bin, a second pressing ring, a filter screen and a gas chamber bin, wherein an annular boss is arranged in the sensor bin, the sealing ring is arranged on the annular boss, the first pressing ring is detachably arranged in the sensor bin, when in use, a circuit board and a sensor body are both arranged in the sensor bin, one side of the circuit board is abutted with the sealing ring, the first pressing ring is arranged on the other side of the circuit board, and the first pressing ring abuts against the circuit board and the sealing ring;
the bottom end of the plug is detachably connected with the top end of the sensor bin, and the bottom end of the sensor bin is detachably connected with the top end of the air chamber bin;
the filter screen is arranged on the annular supporting table, the second pressing ring is detachably arranged in the air chamber bin, and the second pressing ring is used for propping the filter screen against the annular supporting table.
Further, an annular groove is formed in the annular boss, and the sealing ring is arranged in the annular groove.
Further, the first clamping ring is cylindrical, external threads are arranged on the outer side wall of the first clamping ring, an annular clamping table is arranged at the bottom end of the first clamping ring, at least two fixing holes are formed in the top end of the first clamping ring, internal threads are arranged in the sensor bin, and the first clamping ring is in threaded connection with the sensor bin.
Further, the structure of the second pressing ring is the same as that of the first pressing ring, an internal thread is arranged in the air chamber bin, and the second pressing ring is in threaded connection with the air chamber bin.
Further, a first connector is arranged at the bottom end of the sensor bin and is detachably connected with the top end of the air chamber bin.
Further, the sensor bin and the air chamber bin are both cylindrical, and two ends of the sensor bin are respectively in threaded connection with the plug and the air chamber bin.
Further, a second connector is arranged at the bottom end of the air chamber bin, and external threads are arranged on the second connector.
Further, the sealing ring is an O-shaped rubber sealing ring.
Further, a cable channel is arranged in the plug along the axis direction of the plug.
The utility model has the following advantages: the annular boss is arranged in the sensor bin, the sealing ring is arranged on the annular boss, the sealing performance of the annular boss combined with the sealing ring and the first pressing ring is better, a good sealing and blocking effect can be formed, the sealing performance can be effectively ensured, and the tested gas is prevented from entering a circuit system above the circuit board, so that the sealing and explosion-proof requirements are met; the sensor bin and the air chamber bin adopt split structures, the plug, the sensor bin and the air chamber bin are respectively and detachably connected, the disassembly and the installation are convenient and quick, the sensor bin and the air chamber bin are mutually independent, the filter screen or the circuit board and the sensor body can be independently disassembled, and the replacement or the overhaul of parts is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the scope of the utility model.
Fig. 1 is an exploded view of a protective cover for a gas sensor according to some embodiments of the present utility model.
Fig. 2 is a perspective view of a gas sensor protective cover according to some embodiments of the present utility model.
Fig. 3 is a cross-sectional view of a gas sensor protective cover according to some embodiments of the present utility model.
Fig. 4 is a first perspective view of a sensor cartridge of a gas sensor shield according to some embodiments of the present utility model.
Fig. 5 is a second perspective view of a sensor cartridge of a gas sensor shield according to some embodiments of the present utility model.
Fig. 6 is a schematic view illustrating an internal structure of a sensor compartment of a gas sensor protection cover according to some embodiments of the present utility model.
Fig. 7 is a first view of a plenum chamber of a gas sensor shield according to some embodiments of the present utility model.
Fig. 8 is a second perspective view of a plenum chamber of a gas sensor shield according to some embodiments of the present utility model.
Fig. 9 is a schematic diagram illustrating an internal structure of a chamber of a gas sensor protection cover according to some embodiments of the present utility model.
Fig. 10 is a first view of a first clamping ring of a gas sensor shield according to some embodiments of the present utility model.
FIG. 11 is a second view of a first clamping ring of a gas sensor shield according to some embodiments of the present utility model.
Fig. 12 is a cross-sectional view of a prior art gas sensor shield.
In the figure: 1. the filter screen comprises a plug, 2, a first pressing ring, 3, a circuit board, 4, a sensor body, 5, a sealing ring, 6, a sensor bin, 7, a second pressing ring, 8, a filter screen, 9, an air chamber bin, 10, a first connector, 11, an annular boss, 12, an annular groove, 13, a second connector, 14, an annular supporting table, 15, an annular pressing table, 16, a fixing hole, 17, a protective shell, 18 and a filter screen pressing ring.
Detailed Description
Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, 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.
Example 1
As shown in fig. 1 to 11, a gas sensor protection cover in the first aspect of the embodiment of the present utility model includes a plug 1, a first pressing ring 2, a sealing ring 5, a sensor housing 6, a second pressing ring 7, a filter screen 8 and a gas chamber housing 9, an annular boss 11 is disposed in the sensor housing 6, the sensor housing 6 is cylindrical, the annular boss 11 is disposed along a radial direction of the sensor housing 6, the annular boss 11 and the sensor housing 6 are integrally formed, the sealing ring 5 is disposed on the annular boss 11, the first pressing ring 2 is detachably disposed in the sensor housing 6, when in use, both the circuit board 3 and the sensor body 4 are mounted in the sensor housing 6, one side of the circuit board 3 is abutted against the sealing ring 5, the first pressing ring 2 is disposed on the other side of the circuit board 3, and the first pressing ring 2 abuts the circuit board 3 against the sealing ring 5, thereby forming an effective seal to prevent a gas to be measured from entering a circuit system above the circuit board 3;
the bottom end of the plug 1 is detachably connected with the top end of the sensor bin 6, and the bottom end of the sensor bin 6 is detachably connected with the top end of the air chamber bin 9;
as shown in fig. 9, an annular supporting table 14 is arranged in the air chamber bin 9, the air chamber bin 9 is cylindrical, the annular supporting table 14 is arranged along the radial direction of the air chamber bin 9, the annular supporting table 14 and the air chamber bin 9 are integrally formed, the filter screen 8 is arranged on the annular supporting table 14, the second pressing ring 7 is detachably arranged in the air chamber bin 9, and the second pressing ring 7 abuts against the filter screen 8 and the annular supporting table 14; the filter screen 8 is circular, and filter screen 8 adopts stainless steel material to make, and the mesh number of filter screen 8 is 80 mesh to 180 mesh, and the border and the annular supporting bench 14 butt of filter screen 8, filter screen 8 are used for filtering the gas of awaiting measuring, get rid of dust, large granule impurity or foreign matter etc. in the gas of awaiting measuring.
In this embodiment, as shown in fig. 3 and fig. 6, the annular boss 11 is provided with an annular groove 12, the sealing ring 5 is disposed in the annular groove 12, the thickness of the sealing ring 5 is greater than the depth of the annular groove 12, and the sealing ring 5 can be conveniently positioned and installed by setting the annular groove 12, and specifically, the sealing ring 5 adopts an O-shaped rubber sealing ring.
Further, two ends of the sensor bin 6 are respectively connected with the plug 1 and the air chamber bin 9 in a threaded manner.
The technical effects achieved by the embodiment are as follows: the annular boss 11 is arranged in the sensor bin 6, the sealing ring 5 is arranged on the annular boss 11, the sealing performance of the annular boss 11 combined with the sealing ring 5 and the first pressing ring is better, a good sealing and blocking effect can be formed, the sealing performance can be effectively ensured, and the tested gas is prevented from entering a circuit system above the circuit board 3, so that the sealing and explosion-proof requirements are met; the sensor bin 6 and the air chamber bin 9 adopt split structures, the plug 1, the sensor bin 6 and the air chamber bin 9 are respectively and detachably connected, the disassembly and the installation are convenient and quick, the sensor bin 6 and the air chamber bin 9 are mutually independent, the filter screen 8 or the circuit board 3 and the sensor body 4 can be independently disassembled, and the replacement or the overhaul of parts is convenient to carry out.
Example 2
As shown in fig. 1 to 11, this embodiment provides another gas sensor protection cover, which has substantially the same structure as that of embodiment 1, and only different portions will be described below.
In this embodiment, as shown in fig. 10 and 11, the first pressing ring 2 is cylindrical, an external thread is provided on an outer sidewall of the first pressing ring 2, an annular pressing table 15 is provided at a bottom end of the first pressing ring 2, and at least two fixing holes 16 are provided at a top end of the first pressing ring 2; specifically, the fixed orifices 16 are round holes, the fixed orifices 16 are preferably arranged in two, the two fixed orifices 16 are symmetrically arranged, internal threads are arranged in the sensor bin 6, the first pressing ring 2 is in threaded connection with the sensor bin 6, the first pressing ring 2 can be conveniently disassembled and assembled by means of a disassembling tool through the fixed orifices 16, meanwhile, the compression degree between the circuit board 3 and the sealing ring 5 can be controlled, and the sealing performance is guaranteed.
In this embodiment, the second pressing ring 7 has the same structure as the first pressing ring 2, the air chamber 9 is provided with internal threads, and the second pressing ring 7 is screwed into the air chamber 9.
The technical effects achieved by the embodiment are as follows: the first pressing ring 2 and the second pressing ring 7 are simple in structure, convenient and fast to assemble and disassemble, meanwhile, the pressing degree can be flexibly controlled, and the tightness of connection is guaranteed.
Example 3
As shown in fig. 1 to 11, this embodiment provides another gas sensor protection cover, which has substantially the same structure as that of embodiment 2, and only different portions will be described below.
In this embodiment, the bottom end of the sensor compartment 6 is provided with a first connector 10, and the first connector 10 is detachably connected to the top end of the air chamber compartment 9.
In this embodiment, the connector 10 is cylindrical, the first connector 10 is provided with external threads, and the first connector 10 is in threaded connection with the top end of the air chamber.
Further, the whole assembly method of the sensor protection cover comprises the following steps of firstly placing the sealing ring 5 into the annular groove 12 in the sensor bin 6, connecting the sensor body 4 with the circuit board 3, then placing the sensor body into the sensor bin 6, screwing the first pressing ring 2 into the sensor bin 6, and tightly pressing the circuit board 3, so that the circuit board 3 and the sealing ring 5 are tightly abutted and sealed; then the filter screen 8 is put on an annular supporting table 14 in the air chamber bin 9, and the filter screen 8 is screwed into the second pressing ring 7 to be pressed and fixed in the air chamber bin 9; and then the sensor bin 6 and the air chamber bin 9 are connected, and finally the plug 1 is connected with the sensor bin 6 to complete assembly.
The technical effects achieved by the embodiment are as follows: the detachable connection between the sensor bin 6 and the air chamber bin 9 is independent of each other, so that the sensor bin 6 and the air chamber bin 9 can be assembled and disassembled independently, overhaul and replacement of parts are facilitated, and meanwhile, the whole sensor protection cover is simple in structure and can be assembled and disassembled rapidly.
Example 4
As shown in fig. 1 to 11, this embodiment provides another gas sensor protection cover, which has substantially the same structure as that of embodiment 1, and only different portions will be described below.
In this embodiment, the bottom of air chamber 9 is equipped with second connector 13, and second connector 13 is the tube-shape, is equipped with the external screw thread on the second connector 13 lateral wall, can be conveniently with pipeline or container connection to detect gas.
In this embodiment, a cable channel is provided in the plug 1 along the axial direction thereof, so that the cable can be conveniently mounted and connected to the circuit board 3.
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
The terms such as "upper", "lower", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present utility model, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present utility model without substantial modification of the technical content.
Claims (9)
1. The utility model provides a gas sensor safety cover, its characterized in that includes end cap (1), first clamping ring (2), sealing washer (5), sensor storehouse (6), second clamping ring (7), filter screen (8) and air chamber storehouse (9), be equipped with annular boss (11) in sensor storehouse (6), sealing washer (5) set up on annular boss (11), first clamping ring (2) detachable sets up in sensor storehouse (6), during the use, circuit board (3) and sensor body (4) are all installed in sensor storehouse (6), one side of circuit board (3) with sealing washer (5) butt, first clamping ring (2) set up the opposite side of circuit board (3), just first clamping ring (2) will circuit board (3) with sealing washer (5) support tightly;
the bottom end of the plug (1) is detachably connected with the top end of the sensor bin (6), and the bottom end of the sensor bin (6) is detachably connected with the top end of the air chamber bin (9);
an annular supporting table (14) is arranged in the air chamber bin (9), the filter screen (8) is arranged on the annular supporting table (14), the second pressing ring (7) is detachably arranged in the air chamber bin (9), and the second pressing ring (7) tightly abuts against the filter screen (8) and the annular supporting table (14).
2. A gas sensor protection cover according to claim 1, characterized in that the annular boss (11) is provided with an annular groove (12), and the sealing ring (5) is arranged in the annular groove (12).
3. The gas sensor protection cover according to claim 1, wherein the first pressing ring (2) is cylindrical, an external thread is arranged on the outer side wall of the first pressing ring (2), an annular pressing table (15) is arranged at the bottom end of the first pressing ring (2), at least two fixing holes (16) are arranged at the top end of the first pressing ring (2), an internal thread is arranged in the sensor bin (6), and the first pressing ring (2) is in threaded connection with the sensor bin (6).
4. A gas sensor protection cover according to claim 3, characterized in that the structure of the second pressing ring (7) is the same as that of the first pressing ring (2), an internal thread is arranged in the gas chamber (9), and the second pressing ring (7) is in threaded connection with the gas chamber (9).
5. A gas sensor protection cover according to claim 1, characterized in that the bottom end of the sensor compartment (6) is provided with a first connector (10), said first connector (10) being detachably connected to the top end of the gas chamber compartment (9).
6. The gas sensor protection cover according to claim 5, wherein the sensor bin (6) and the gas chamber bin (9) are cylindrical, and two ends of the sensor bin (6) are respectively in threaded connection with the plug (1) and the gas chamber bin (9).
7. A gas sensor protection cover according to claim 1, characterized in that the bottom end of the gas chamber (9) is provided with a second connector (13), and the second connector (13) is provided with external threads.
8. A gas sensor protection cover according to claim 1, characterized in that the sealing ring (5) is an O-ring rubber sealing.
9. A gas sensor protection cover according to claim 1, characterized in that a cable channel is provided in the plug (1) in the direction of its axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222593319 | 2022-09-29 | ||
| CN2022225933192 | 2022-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220438273U true CN220438273U (en) | 2024-02-02 |
Family
ID=89685951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321681643.8U Active CN220438273U (en) | 2022-09-29 | 2023-06-29 | Gas sensor protection cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220438273U (en) |
-
2023
- 2023-06-29 CN CN202321681643.8U patent/CN220438273U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |