CN206945603U - A kind of potentiometric oxygen sensor sealing structure - Google Patents
A kind of potentiometric oxygen sensor sealing structure Download PDFInfo
- Publication number
- CN206945603U CN206945603U CN201720736149.5U CN201720736149U CN206945603U CN 206945603 U CN206945603 U CN 206945603U CN 201720736149 U CN201720736149 U CN 201720736149U CN 206945603 U CN206945603 U CN 206945603U
- Authority
- CN
- China
- Prior art keywords
- pedestal
- hole
- porcelain piece
- oxygen sensor
- sensing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000001301 oxygen Substances 0.000 title claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 34
- 235000012459 muffins Nutrition 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
A kind of potentiometric oxygen sensor is the utility model is related to, more particularly, to a kind of potentiometric oxygen sensor sealing structure.The potentiometric oxygen sensor sealing structure, including pedestal, sleeve, wire base, shield and sensing element, the first porcelain piece and the second porcelain piece are provided between sensing element cylindrical wall and base internal wall, sealing muffin is folded between the opposing end surface of first porcelain piece and the second porcelain piece, sealing muffin is set on sensing element, periphery is interference fitted with base internal wall, and shield is provided with the tail gas through hole that some steam supply tail gas pass through, and sleeve is provided with some air holes passed through for air.By the way that pedestal inner chamber is designed into three-stage shoulder hole, muffin is sealed to be arranged in less middle hole, the sectional area of sealing muffin is reduced, and the length of potentiometric oxygen sensor sealing structure has also reduced compared to traditional structure so that the better tightness of potentiometric oxygen sensor sealing structure.
Description
Technical field
A kind of potentiometric oxygen sensor is the utility model is related to, seals and ties more particularly, to a kind of potentiometric oxygen sensor
Structure.
Background technology
At present, the laws and regulations requirement of vehicular emission is more and more stricter, therefore the electric injection system of closed-loop control will turn into main flow,
Oxidation sensors are elements essential on modern closed loop reaction type automobile, it may be said that the quality of oxidation sensors directly affects
The composition of engine exhaust emission.Chip oxygen sensor complex manufacturing technology common at present, cost of manufacture is high, sensor
Sensitivity is relatively low.
The sensing element of existing potentiometric oxygen sensor is by front end ceramic member and rear end ceramic member and the sealing muffin of centre
Sealing is fixed on pedestal inner chamber, because inner chamber internal diameter is larger, causes sealing muffin sectional area also larger, causes under sealing reliability
Drop.Sealing reliability declines the precision that can have a strong impact on potentiometric oxygen sensor.
Utility model content
To solve problem above, the utility model provides a kind of potentiometric oxygen sensor sealing structure, and the concentration difference type oxygen passes
Sensor sealing structure is simple in construction, favorable sealing property.
The technical solution adopted in the utility model is：A kind of potentiometric oxygen sensor sealing structure, including pedestal, be arranged on
The sleeve of pedestal rear end, the wire base for being arranged on sleeve rear end, the shield for being arranged on pedestal front end and it is arranged in pedestal
Sensing element, it is characterised in that：The sensing element front end is extend into shield through pedestal, and the sensing element rear end passes through the 3rd porcelain
Part is arranged on wire base bottom, and the first porcelain piece and the second porcelain piece, institute are provided between the sensing element cylindrical wall and base internal wall
To state and sealing muffin is folded between the opposing end surface of the first porcelain piece and the second porcelain piece, the sealing muffin is set on sensing element,
Periphery is interference fitted with base internal wall, and the shield is provided with the tail gas through hole that some steam supply tail gas pass through, the sleeve
It is provided with some air holes passed through for air.
Preferably, the pedestal uses hexagonal pedestal, the pedestal inner chamber uses three-stage shoulder hole, respectively internal diameter
Preceding sector hole, middle hole and the rear sector hole gradually increased, sector hole and the flange surface of middle hole before the first porcelain piece end face is resisted against
On, the sealing muffin is arranged in middle hole, and second porcelain piece is resisted against on the flange surface of middle hole and rear sector hole.
The utility model obtain beneficial effect be：By the way that pedestal inner chamber is designed into three-stage shoulder hole, muffin is sealed
In less middle hole, the sectional area of sealing muffin, and the length phase of potentiometric oxygen sensor sealing structure are reduced
Also reduced than traditional structure so that the better tightness of potentiometric oxygen sensor sealing structure.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of potentiometric oxygen sensor sealing structure of the present utility model, including pedestal 1, sleeve (overcoat
Cylinder 21 and after sleeve 22), wire base 3 (four hole fluorine plugs are cased with wire base), shield 4, sensing element 5, porcelain piece (the first porcelain
Part 61, the second porcelain piece 62 and the 3rd porcelain piece 63) and sealing muffin 7, it is cavity structure that pedestal 1 is interior, and sensing element 5 passes through the first porcelain piece
61st, the second porcelain piece 62 and the 3rd porcelain piece 63 are arranged in the cavity of pedestal 1, and sleeve is arranged on the rear end of pedestal 1, by the second porcelain piece
62nd, inside, sleeve rear end is provided with wire base 3, and four holes are cased with outside wire base 3 for the 3rd porcelain piece 63 and the rear end of sensing element 5 set
Fluorine plug, shield 4 are arranged on the front end of pedestal 1, by the front end sleeve of sensing element 5 inside；The front end of sensing element 5 is extend into through pedestal 1
In shield 4, rear end is arranged on the bottom of wire base 3 by the 3rd porcelain piece 63, is set between the cylindrical wall of sensing element 5 and the inwall of pedestal 1
There are the first porcelain piece 61 and the second porcelain piece 62, sealing muffin 7 be folded between the first porcelain piece 61 and the opposing end surface of the second porcelain piece 62,
Sealing muffin 7 is set on sensing element 5, and periphery is interference fitted with the inwall of pedestal 1；Shield 4 is provided with some steam supply tail gas
The tail gas through hole 41 passed through, outer sleeve 21 and the corresponding position of after sleeve 22 are equipped with some air holes 23 passed through for air.
Using double-sleeve structure (adding after sleeve 22 outside outer sleeve 21) at wire base 3, wire base 3 is added
Intensity so that wire base 3 is more convenient when in use, and is hardly damaged.
Pedestal 1 uses hexagonal pedestal, and the inner chamber of pedestal 1 uses three-stage shoulder hole, the leading portion that respectively internal diameter gradually increases
Hole 11, middle hole 12 and rear sector hole 13, before the end face of the first porcelain piece 61 is resisted against on sector hole 11 and the flange surface of middle hole 12, sealing
Muffin 7 is arranged in middle hole 12, and the second porcelain piece 62 is resisted against on the flange surface of middle hole 12 and rear sector hole 13.Seal muffin 7
In the less middle hole 12 of internal diameter, the sealed section product of smaller sealing muffin 7 so that better tightness.And use
The inner chamber of pedestal 1 uses three-stage shoulder hole so that installation positioning is more convenient.
Claims (2)
1. a kind of potentiometric oxygen sensor sealing structure, including pedestal (1), it is arranged on the sleeve of pedestal (1) rear end, is arranged on set
The wire base (3) of tube rear end, the shield (4) for being arranged on pedestal (1) front end and the sensing element (5) being arranged in pedestal (1), its
It is characterised by：Sensing element (5) front end is extend into shield (4) through pedestal (1), and sensing element (5) rear end passes through the
Three porcelain pieces (63) are arranged on wire base (3) bottom, and first is provided between sensing element (5) cylindrical wall and pedestal (1) inwall
Porcelain piece (61) and the second porcelain piece (62), sealing is folded between first porcelain piece (61) and the opposing end surface of the second porcelain piece (62)
Muffin (7), the sealing muffin (7) are set on sensing element (5), and periphery is interference fitted with pedestal (1) inwall, the shield
(4) the tail gas through hole (41) that some steam supply tail gas pass through is provided with, the sleeve is provided with some air passed through for air
Through hole (23).
2. potentiometric oxygen sensor sealing structure according to claim 1, it is characterised in that：The pedestal (1) uses six
Angle pedestal, pedestal (1) inner chamber use three-stage shoulder hole, preceding sector hole (11) that respectively internal diameter gradually increases, middle hole
(12) it is resisted against with rear sector hole (13), the first porcelain piece (61) end face on preceding sector hole (11) and the flange surface of middle hole (12),
The sealing muffin (7) is arranged in middle hole (12), and second porcelain piece (62) is resisted against middle hole (12) and rear sector hole
(13) on flange surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736149.5U CN206945603U (en) | 2017-06-22 | 2017-06-22 | A kind of potentiometric oxygen sensor sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736149.5U CN206945603U (en) | 2017-06-22 | 2017-06-22 | A kind of potentiometric oxygen sensor sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206945603U true CN206945603U (en) | 2018-01-30 |
Family
ID=61365729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720736149.5U Active CN206945603U (en) | 2017-06-22 | 2017-06-22 | A kind of potentiometric oxygen sensor sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206945603U (en) |
-
2017
- 2017-06-22 CN CN201720736149.5U patent/CN206945603U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230926 Address after: 430058 Hubei Cultural and Creative Technology Enterprise Incubator (Collection WCKJ-C2205) on 22MB plot in Wuhan Economic and Technological Development Zone, Hubei Province Patentee after: Borui Intelligent Technology (Wuhan) Co.,Ltd. Address before: 430056 Changhua Industrial Park, the fourth northwest Hu Road, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: WUHAN ZIRCONIA ELECTRONIC TECHNOLOGY CO.,LTD. |