CN111103352B - Assembled sealed urea sensor - Google Patents
Assembled sealed urea sensor Download PDFInfo
- Publication number
- CN111103352B CN111103352B CN202010003766.0A CN202010003766A CN111103352B CN 111103352 B CN111103352 B CN 111103352B CN 202010003766 A CN202010003766 A CN 202010003766A CN 111103352 B CN111103352 B CN 111103352B
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- wire harness
- sealing
- shell
- transduction piece
- sealing block
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000004202 carbamide Substances 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 127
- 230000026683 transduction Effects 0.000 claims abstract description 44
- 238000010361 transduction Methods 0.000 claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 2
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 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
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2962—Measuring transit time of reflected waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/022—Liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02809—Concentration of a compound, e.g. measured by a surface mass change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02836—Flow rate, liquid level
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses an assembled sealed urea sensor, wherein the assembly between a wire harness device and a wire harness sealing shell is realized through a clamping block matched with a clamping groove and the sealing is realized through a sealing ring; the transduction piece is attached to the bottom of the inner side of the ultrasonic transceiver shell and is pressed by the sealing block; locking and fixing one ends of the wire harness sealing shell and the ultrasonic receiving and transmitting shell and the fixing support through the locking mechanism, and sealing between the wire harness sealing shell and the ultrasonic receiving and transmitting shell through the sealing convex ring; the other end of the fixed support is provided with a reflecting surface parallel to the transduction piece, and positive and negative electrode wire bundles of the transduction piece are collected through the wire harness device. According to the invention, through the design of the clamping block of the wire harness device shell and the clamping groove on the wire harness sealing shell and the sealing between the wire harness sealing shell and the ultrasonic receiving and transmitting shell through the sealing convex ring, the quick assembly can be realized, the sealing performance is effectively ensured, and the accuracy of ultrasonic detection of the liquid level and the urea concentration is ensured.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to an assembled sealing type urea sensor used in a vehicle urea box.
Background
With the increasing environmental pollution and the increasing amount of vehicle maintenance, national regulations are increasingly stringent for vehicle emissions. The exhaust gas of an automobile, especially a diesel automobile, contains nitrogen oxides, and direct emission of the nitrogen oxides causes serious air pollution, so that a Selective Catalytic Reduction (SCR) aftertreatment system is widely used as an exhaust gas Reduction system. SCR utilizes urea to decompose to generate NH 3, and NH 3 reacts with NO x under the action of a catalyst, so that the emission of NO x in tail gas is reduced.
SCR technology has been commonly applied to vehicles in four and five countries, and with the formal implementation of the sixth national standard, the emission requirements for NO x in the exhaust gas are higher, so a more efficient SCR system is needed. The SCR system comprises a urea box containing urea solution, and a urea liquid level sensor needs to be installed on the urea box, and the urea liquid level sensor not only detects the liquid level of urea, but also detects the concentration of the urea solution by utilizing the ultrasonic principle so as to ensure the effectiveness of NO x degradation.
In the actual production and use process of the urea sensor, the assembly efficiency and the tightness are key to reducing the production cost, the service life and the performance, while the sensor in the prior art is generally complex in structure, so that the problem of easy leakage occurs when the production cost is higher and the sensor is used, once liquid permeates into the sensor, the influence on the conductivity is caused, the detection precision of ultrasonic waves is influenced more seriously, thus the detection precision of liquid level and urea concentration is caused to have larger deviation, the effectiveness of NO x degradation can not be ensured directly, and the requirements of related emission standards can not be met.
Disclosure of Invention
In order to solve the technical problems, the invention provides an assembled sealed urea sensor, which comprises a wire harness, a wire harness device, a sealing ring, a wire harness sealing shell, a sealing block, a transduction piece, an ultrasonic transceiver shell and a fixing bracket;
assembling the wire harness device and the wire harness sealing shell by matching a clamping block of the wire harness device shell with a clamping groove on the wire harness sealing shell, and sealing by the sealing ring between the wire harness device and the wire harness sealing shell;
The energy conversion sheet is attached to the bottom of the inner side of the ultrasonic receiving and transmitting shell, and the sealing block is filled in the ultrasonic receiving and transmitting shell so that the energy conversion sheet is attached between the sealing block and the bottom of the ultrasonic receiving and transmitting shell;
The wire harness sealing shell and the ultrasonic receiving and transmitting shell are locked and fixed with one end of the fixing support through the locking mechanism so as to tightly press the sealing block and the transduction piece between the wire harness sealing shell and the ultrasonic receiving and transmitting shell, and sealing between the wire harness sealing shell and the ultrasonic receiving and transmitting shell is realized through the sealing convex ring;
The other end of the fixed support is provided with a reflecting surface parallel to the transduction piece, and a wire harness connected with the anode and the cathode of the transduction piece sequentially passes through the sealing block and the wire harness sealing shell and is connected to an external controller after being concentrated by the wire harness device.
Further, the inside of the wire harness sealing case is provided with a first accommodating groove for accommodating a surplus length portion of the wire harness after the wire harness is welded to the transduction piece.
Further, a second accommodating groove for accommodating the transduction piece is formed in the bottom of the sealing block, and the depth of the second accommodating groove is smaller than the thickness of the transduction piece.
Wherein, seal protruding circle with the sealing piece is integrated into one piece's disjunctor structure.
Further, the ultrasonic transceiver is also provided with a temperature sensor, and the temperature sensor is attached between the sealing block and the side part of the ultrasonic transceiver shell. Wherein, the inner wall of the ultrasonic transceiver shell is provided with a groove for accommodating the temperature sensor; or the outer wall of the sealing block is provided with a groove for accommodating the temperature sensor, and the wire harness of the temperature sensor passes through the sealing block and is converged with the positive and negative wire harnesses of the transduction piece and is concentrated by the wire harness device; or the inner wall of the ultrasonic wave receiving and transmitting shell and the outer wall of the sealing block are simultaneously provided with grooves corresponding to the temperature sensor, the temperature sensor is clamped between the grooves of the inner wall of the ultrasonic wave receiving and transmitting shell and the grooves of the outer wall of the sealing block, and the wire harness of the temperature sensor penetrates through the sealing block and is converged with the positive and negative wire harnesses of the transduction piece and is concentrated by the wire harness device.
Further, the outside of fixed bolster parcel one deck porous shell, through the through-hole that sets up on the porous shell reduces the influence of bubble to the detection precision when realizing urea solution circulation.
Through the technical scheme, the invention has the following beneficial effects:
1. When the wire harness device is in sealing connection with the wire harness sealing shell through the sealing ring, the wire harness device and the wire harness sealing shell can be quickly assembled through the design of the clamping block of the wire harness device shell and the clamping groove on the wire harness sealing shell, and the conditions of distortion or cracking and the like of the sealing ring possibly caused by screw tightening and assembling in the prior art are avoided, so that the sealing performance is effectively ensured;
2. The wire harness sealing shell and the ultrasonic receiving and transmitting shell are sealed through the sealing convex ring, the wire harness sealing shell and the ultrasonic receiving and transmitting shell are locked and fixed with one end of the fixed support through the locking mechanism, the tightness between the wire harness sealing shell and the ultrasonic receiving and transmitting shell is ensured, and meanwhile, the quick assembly is realized, and the assembly efficiency is greatly improved;
3. The structure can ensure that the transduction piece is flush with and closely attached to the bottom of the ultrasonic transceiver shell, thereby ensuring the accuracy of ultrasonic detection of liquid level and urea concentration;
4. The arrangement of the porous shell on the outer side of the fixed support utilizes the through holes arranged on the porous shell to realize the circulation of urea solution, and can effectively reduce the generation of bubbles so as to reduce the influence of the existence of the bubbles on the ultrasonic detection precision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is an exploded view of an optimized construction of a urea sensor in an embodiment;
FIG. 2 is a schematic cross-sectional view of an optimized configuration of a urea sensor in an embodiment;
FIG. 3 is a schematic diagram of an ultrasonic transceiver housing and a sealing block with a second receiving groove in an embodiment;
fig. 4 is a schematic diagram of an ultrasonic transceiver housing and a sealing block without a second receiving groove in an embodiment.
In the figure: 10. a wire harness; 20. a wire harness; 21. a clamping block; 30. a seal ring; 40. a wire harness sealing case; 41. a clamping groove; 42. the first accommodating groove is formed; 50. a bolt and a nut; 60. a sealing block; 61. sealing the convex ring; 62. the accommodating groove II; 70. a transduction piece; 80. an ultrasonic wave receiving and transmitting shell; 90. a fixed bracket; 100. a temperature sensor.
Detailed Description
Referring to fig. 1 and 2, the assembled sealed urea sensor provided by the invention comprises a wire harness 10, a wire harness device 20, a sealing ring 30, a wire harness sealing shell 40, a sealing block 60, a transduction piece 70, an ultrasonic transceiver shell 80 and a fixing bracket 90; assembling the wire harness device 20 and the wire harness sealing shell 40 by matching the clamping blocks 21 of the outer shell of the wire harness device 20 with the clamping grooves 41 on the wire harness sealing shell 40, and sealing by the sealing ring 30 between the wire harness device 20 and the wire harness sealing shell 40; the transducer sheet 70 is attached to the inside bottom of the ultrasonic transceiver case 80, and the sealing block 60 is filled inside the ultrasonic transceiver case 80 so that the transducer sheet 70 is attached between the sealing block 60 and the bottom of the ultrasonic transceiver case 80; the wire harness sealing shell 40 and the ultrasonic receiving and transmitting shell 80 are locked and fixed with one end of the fixed bracket 90 through a locking mechanism such as a bolt and a nut 50 so as to tightly press the sealing block 60 and the transduction piece 70 between the wire harness sealing shell 40 and the ultrasonic receiving and transmitting shell 80, and the sealing between the wire harness sealing shell 40 and the ultrasonic receiving and transmitting shell 80 is realized through a sealing convex ring 61 which is integrally formed with the sealing block 60 and has a connected structure; the other end of the fixing bracket 90 is provided with a reflecting surface parallel to the transduction piece 70, the wire harness 10 connected with the anode and the cathode of the transduction piece 70 sequentially passes through the sealing block 60 and the wire harness sealing shell 40 and is connected to an external controller after being concentrated by the wire harness device 20, and the wire harness sealing shell 40 is internally provided with a first accommodating groove 42 for accommodating the allowance length part of the wire harness 10 after the wire harness 10 is welded and connected with the transduction piece 70; the outside of the fixed support 90 is wrapped with a layer of porous shell, and through holes formed in the porous shell, urea solution circulation is achieved, and meanwhile the influence of bubbles on detection accuracy is reduced.
Further, a temperature sensor 100 is provided, and the temperature sensor 100 is bonded between the sealing block 60 and the side portion of the ultrasonic transceiver case 80. Wherein, the inner side wall of the ultrasonic transceiver housing 80 is provided with a groove for accommodating the temperature sensor 100; or the outer side wall of the sealing block 60 is provided with a groove for accommodating the temperature sensor 100, and the wire harness 10 of the temperature sensor 100 passes through the sealing block 60 and is converged with the positive and negative wire bundles 10 of the transduction piece 70 and is concentrated by the wire harness device 20; or the inner side wall of the ultrasonic transceiver shell 80 and the outer side wall of the sealing block 60 are simultaneously provided with grooves corresponding to the temperature sensor 100, the temperature sensor 100 is clamped between the inner wall groove of the ultrasonic transceiver shell 80 and the outer wall groove of the sealing block 60, and the wire harness 10 of the temperature sensor 100 passes through the sealing block 60 and is converged with the positive and negative wire bundles 10 of the transduction piece 70 and is concentrated by the wire harness device 20.
In the assembly process of the embodiment, firstly, the wire harness 10 of the anode and the cathode of the transduction piece 70 passes through the sealing block 60 to the other end and is welded with the transduction piece 70, then the sealing block 60 is filled into the ultrasonic transceiver shell 80 so that the transduction piece 70 is directly clamped between the bottom of the sealing block 60 and the bottom of the ultrasonic transceiver shell 80 as shown in fig. 4 (or a second accommodating groove 62 for accommodating the transduction piece 70 is arranged at the bottom of the sealing block 60 and the depth of the second accommodating groove 62 is smaller than the thickness of the transduction piece 70 as shown in fig. 3, so that the transduction piece 70 is firstly accommodated in the second accommodating groove 62 after being welded with the anode and cathode wire harness 10, and then the sealing block 60 is filled into the ultrasonic transceiver shell 80 so that the transduction piece 70 is clamped between the bottom of the sealing block 60 and the bottom of the ultrasonic transceiver shell 80, and the contrast is not particularly limited); then, the wire harness sealing shell 40 is locked and fixed with the ultrasonic transceiver shell 80 through a locking mechanism such as a bolt and a nut 50, and simultaneously locked and fixed with one end of the fixed bracket 90, and sealing between the wire harness sealing shell 40 and the ultrasonic transceiver shell 80 is realized by utilizing the sealing convex ring 61 of the sealing block 60; then, the positive and negative electrode wire bundles 10 of the transduction piece 70 and the wire bundles 10 of the temperature sensor 100 are gathered and then pass through the wire harness device 20 to be concentrated, the wire harness device 20 and the wire harness sealing shell 40 are rapidly assembled through the clamping blocks 21 of the outer shell of the wire harness device 20 and the clamping grooves 41 on the wire harness sealing shell 40, and sealing is realized between the wire harness device 20 and the wire harness sealing shell 40 through the sealing ring 30; finally, a porous housing having through holes is wrapped around the outside of the fixing bracket 90.
When the device works, urea solution in the urea tank circulates in the inner side and the outer side of the porous shell through the through holes of the porous shell and can effectively avoid adverse effects on detection precision caused by bubbles, the transduction piece 70 generates ultrasonic waves and sends out the ultrasonic waves through the ultrasonic wave receiving and sending shell 80 tightly attached to the transduction piece, the ultrasonic waves are reflected by the reflecting surface, parallel to the transduction piece 70, of the other end of the fixing support 90 and received by the transduction piece 70, the transmission rate and the transmission time of the ultrasonic waves with the fixed frequency in urea are calculated by the controller, the temperature of the urea solution is synchronously obtained through the temperature sensor 100, the liquid level and the concentration of the urea solution in the urea tank are calculated, and real-time monitoring of the liquid level, the temperature and the concentration of the urea solution in the urea tank is sequentially realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments described above will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. An assembled sealed urea sensor is characterized by comprising a wire harness (10), a wire harness device (20), a sealing ring (30), a wire harness sealing shell (40), a sealing block (60), a transduction piece (70), an ultrasonic transceiver shell (80) and a fixed bracket (90);
Assembling the wire harness device (20) and the wire harness sealing shell (40) is achieved through matching a clamping block (21) of the wire harness device (20) shell with a clamping groove (41) on the wire harness sealing shell (40), and sealing is achieved through the sealing ring (30) between the wire harness device (20) and the wire harness sealing shell (40);
The transduction piece (70) is attached to the bottom of the inner side of the ultrasonic transceiver shell (80), and the sealing block (60) is filled in the ultrasonic transceiver shell (80) so that the transduction piece (70) is attached between the sealing block (60) and the bottom of the ultrasonic transceiver shell (80);
the wire harness sealing shell (40) and the ultrasonic receiving and transmitting shell (80) are locked and fixed with one end of the fixing support (90) through a locking mechanism so as to tightly press the sealing block (60) and the transduction piece (70) between the wire harness sealing shell (40) and the ultrasonic receiving and transmitting shell (80), and sealing between the wire harness sealing shell (40) and the ultrasonic receiving and transmitting shell (80) is achieved through the sealing convex ring (61);
The other end of the fixed support (90) is provided with a reflecting surface parallel to the transduction piece (70), and a wire harness (10) connected with the anode and the cathode of the transduction piece (70) sequentially passes through the sealing block (60) and the wire harness sealing shell (40) and is connected to an external controller after being concentrated by the wire harness device (20);
the wire harness sealing shell (40) is internally provided with a first accommodating groove (42) for accommodating the allowance length part of the wire harness (10) after the wire harness (10) is welded with the transduction piece (70);
The bottom of the sealing block (60) is provided with a second accommodating groove (62) for accommodating the transduction piece (70), and the depth of the second accommodating groove (62) is smaller than the thickness of the transduction piece (70).
2. The assembled sealed urea sensor according to claim 1, characterized in that the sealing bead (61) is of one-piece construction with the sealing block (60).
3. The assembled sealed urea sensor of claim 1, further comprising a temperature sensor (100), wherein the temperature sensor (100) fits between the sealing block (60) and a side of the ultrasonic transceiver housing (80).
4. An assembled sealed urea sensor according to claim 3, characterized in that the inner side wall of the ultrasonic transceiver housing (80) is provided with a recess for accommodating the temperature sensor (100).
5. An assembled sealed urea sensor according to claim 3, characterized in that the outer side wall of the sealing block (60) is provided with a groove for accommodating the temperature sensor (100), and the wire harness (10) of the temperature sensor (100) passes through the sealing block (60) and is gathered with the positive and negative wire bundles (10) of the transduction piece (70) and is concentrated by the wire harness device (20).
6. The assembled sealed urea sensor according to claim 3, wherein the inner side wall of the ultrasonic transceiver shell (80) and the outer side wall of the sealing block (60) are simultaneously provided with grooves corresponding to the temperature sensor (100), the temperature sensor (100) is clamped between the inner side wall groove of the ultrasonic transceiver shell (80) and the outer side wall groove of the sealing block (60), and a wire harness (10) of the temperature sensor (100) passes through the sealing block (60) and is converged with positive and negative wire bundles (10) of the transduction piece (70) and is converged by the wire harness device (20).
7. The assembled sealed urea sensor according to claim 1, wherein the outer side of the fixing support (90) is wrapped with a layer of porous shell, and the influence of bubbles on detection precision is reduced while urea solution circulation is realized through the through holes arranged on the porous shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010003766.0A CN111103352B (en) | 2020-01-03 | 2020-01-03 | Assembled sealed urea sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010003766.0A CN111103352B (en) | 2020-01-03 | 2020-01-03 | Assembled sealed urea sensor |
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| Publication Number | Publication Date |
|---|---|
| CN111103352A CN111103352A (en) | 2020-05-05 |
| CN111103352B true CN111103352B (en) | 2024-06-18 |
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| CN202010003766.0A Active CN111103352B (en) | 2020-01-03 | 2020-01-03 | Assembled sealed urea sensor |
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| CN (1) | CN111103352B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820388A (en) * | 2021-05-18 | 2021-12-21 | 合肥杰思环保科技有限公司 | Ultrasonic probe for urea sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596717A (en) * | 2016-12-27 | 2017-04-26 | 东莞正扬电子机械有限公司 | Ultrasonic concentration detector and liquid level sensor with ultrasonic concentration detection function |
| CN107339535A (en) * | 2017-08-23 | 2017-11-10 | 深圳市盛泽森科技有限公司 | A kind of liquid level sensor of integrated magnet valves |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102483383B1 (en) * | 2015-11-27 | 2022-12-30 | 현대두산인프라코어(주) | Urea concentration measuring device and urea water sender and urea water tank including the same |
| CN105403619A (en) * | 2015-12-11 | 2016-03-16 | 佛山市顺德区键合电子有限公司 | Device for detecting oxygen concentration |
| CN205867326U (en) * | 2016-06-21 | 2017-01-11 | 江苏承康医用设备有限公司 | Ultrasonic therapy handle |
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2020
- 2020-01-03 CN CN202010003766.0A patent/CN111103352B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596717A (en) * | 2016-12-27 | 2017-04-26 | 东莞正扬电子机械有限公司 | Ultrasonic concentration detector and liquid level sensor with ultrasonic concentration detection function |
| CN107339535A (en) * | 2017-08-23 | 2017-11-10 | 深圳市盛泽森科技有限公司 | A kind of liquid level sensor of integrated magnet valves |
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| CN111103352A (en) | 2020-05-05 |
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