CN113607809A - Automobile-used urea solution quality detection device of anti-bubble interference - Google Patents
Automobile-used urea solution quality detection device of anti-bubble interference Download PDFInfo
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- CN113607809A CN113607809A CN202110867813.0A CN202110867813A CN113607809A CN 113607809 A CN113607809 A CN 113607809A CN 202110867813 A CN202110867813 A CN 202110867813A CN 113607809 A CN113607809 A CN 113607809A
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 241
- 239000004202 carbamide Substances 0.000 title claims abstract description 241
- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 89
- 239000000243 solution Substances 0.000 claims description 172
- 238000001914 filtration Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction 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
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/222—Constructional or flow details for analysing fluids
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- 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
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Exhaust Gas After Treatment (AREA)
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Abstract
The utility model relates to a prevent automobile-used urea solution quality detection device of bubble interference belongs to urea tank urea solution quality detection technical field, includes: the air bubble eliminator is arranged in the urea box and immersed in the urea solution, and comprises an outer shell with a hollow inner part, wherein the outer shell is provided with a liquid inlet and an air outlet which are arranged in a height difference way, and the position of the air outlet is higher than the liquid inlet; the quality detector is arranged in the outer shell and comprises an inner hollow shell, a detection module for detecting the quality of the urea solution is arranged in the inner shell, and a liquid inlet hole with an upward opening is formed in the inner shell. The signal interference of bubbles to the detection module in the urea solution is greatly reduced by the bubble eliminator, and the quality detection precision of the detection module to the urea solution is improved. The application has the advantages of simple structure, easiness in production and manufacturing, low cost and good effect. Is suitable for various urea boxes, and is convenient for enterprises to produce and manufacture in batches and reduce the cost.
Description
Technical Field
The application relates to the technical field of urea solution quality detection of urea tanks, in particular to a vehicle urea solution quality detection device capable of preventing bubble interference.
Background
The emission of nitrogen oxides NOx into the atmosphere is becoming more and more stringent in legislation concerning vehicle emissions. At present, two methods are used for solving the problem, one method is used for treating the emission of NOx through internal purification of EGR, and the other method is used for treating the emission of NOx through external purification; the aqueous urea solution undergoes hydrolysis in solution in the exhaust gas stream, which in turn converts the nitrogen oxides NOx into nitrogen N2 and water H2O. The SCR system catalytic conversion device is commonly applied to the four and five national vehicles, and the SCR system needs to be provided with a storage device of the urea water liquid, which is commonly called a urea tank.
The urea box is provided with an ultrasonic urea concentration sensor for monitoring the concentration of urea aqueous solution in the urea box, the ultrasonic urea concentration sensor is an ultrasonic-based urea quality detection method, and the principle of the ultrasonic urea concentration sensor is that urea identification and urea concentration detection are carried out by utilizing the difference of the propagation speeds of ultrasonic waves in different media. Within a fixed distance, the time of flight of the ultrasound wave differs between different media and different urea concentrations.
The ultrasonic urea concentration sensor is arranged in the urea box: an ultrasonic probe (a transmitting-receiving body) is used for sending out sound wave pulses to the reflecting baffle plate and then reflecting the sound wave pulses back to the probe. The mean time of flight (TOF) was calculated over a number of cycles, the TOF being almost constant at a fixed temperature and a urea concentration of 32.5%. And if the ultrasonic urea concentration sensor detects that the urea solution is higher than or lower than the TOF threshold value, judging that the quality of the urea solution is unqualified.
However, when the urea tank is mounted on a vehicle, the urea tank inevitably vibrates in accordance with the engine and the vehicle running, and the vibration causes the urea solution to be continuously mixed with air to generate a large amount of air bubbles. Because the propagation rates of sound waves in gas and liquid are different, bubbles arranged between the ultrasonic probe and the reflecting baffle can interfere the detection of the ultrasonic urea concentration sensor on the concentration of the urea solution, so that the ultrasonic urea concentration sensor often has error reporting, and the SCR system is in failure.
Disclosure of Invention
The embodiment of the application provides a vehicle urea solution quality detection device of anti-bubble interference to produce the problem that the bubble leads to ultrasonic wave urea concentration sensor to appear reporting the mistake often among the solution correlation technique in the urea solution.
The embodiment of the application provides a prevent automobile-used urea solution quality detection device of bubble interference, includes:
the air bubble eliminator is arranged in the urea box and immersed in urea solution, and comprises an outer shell with a hollow inner part, wherein the outer shell is provided with a liquid inlet and an air outlet which are arranged in a height difference mode, and the position of the air outlet is higher than the liquid inlet;
the quality detector, the quality detector is arranged in the shell, the quality detector includes the hollow interior casing of inside, be equipped with the detection module who detects the urea solution quality in the interior casing, set up the feed liquor hole that the opening is up on the interior casing.
The utility model provides a prevent automobile-used urea solution quality detection device of bubble interference sets up the bubble annihilator in the urea case and immerses in urea solution, sets up inlet and the gas vent that the discrepancy in elevation set up on the shell body of bubble annihilator, and the position of gas vent is higher than the inlet. A
The urea solution in the urea box enters the outer shell from the liquid inlet of the outer shell, and the bubbles in the urea solution in the outer shell automatically float up and are discharged from the air outlet of the outer shell, so that the number of the bubbles in the urea solution in the outer shell is reduced, and one-time urea solution bubble removal is completed.
And the shell body is immersed in the urea solution, the urea solution arranged in the shell body can not contact with the air, and no additional bubbles can be generated even if the urea solution arranged in the shell body vibrates.
The urea solution arranged in the outer shell enters the inner shell of the quality detector from the liquid inlet hole again, and the liquid inlet hole opening on the inner shell faces upwards, so that bubbles are difficult to enter the inner shell, the number of the bubbles of the urea solution arranged in the inner shell is further reduced, and secondary urea solution bubble removal is completed.
The detection module carries out quality detection on the urea solution after the bubbles are removed twice, so that the signal interference of the bubbles in the urea solution to the detection module is greatly reduced, and the quality detection precision of the detection module to the urea solution is improved. The application has the advantages of simple structure, easiness in production and manufacturing, low cost and good effect. Is suitable for various urea boxes, and is convenient for enterprises to produce and manufacture in batches and reduce the cost.
In some embodiments: the liquid inlet is arranged on the side wall of the outer shell, and a liquid inlet filter screen for filtering urea solution entering the outer shell from the liquid inlet is arranged on the outer shell.
In some embodiments: the exhaust port is arranged at the top of the outer shell, and an exhaust port filter screen for filtering urea solution entering the outer shell from the exhaust port is arranged on the outer shell.
In some embodiments: the shell body is further provided with a liquid outlet, and the liquid outlet is connected with a urea liquid outlet pipe which outputs the urea solution in the shell body to a urea injection system.
In some embodiments: the liquid inlet hole is arranged at the top of the inner shell and is of a cross structure for breaking bubbles.
In some embodiments: and a liquid discharge hole is formed in the bottom of the inner shell, and a one-way valve for discharging the urea solution in the inner shell is arranged in the liquid discharge hole.
In some embodiments: the detection module comprises an ultrasonic transceiver and an ultrasonic reflector, and the ultrasonic transceiver and the ultrasonic reflector are arranged on the inner shell at intervals to detect the quality of the urea solution in the inner shell.
In some embodiments: the ultrasonic transceiver and the ultrasonic reflector are arranged at the bottom of the inner shell, and the ultrasonic waves emitted by the ultrasonic transceiver are emitted to the ultrasonic reflector in the horizontal direction.
In some embodiments: the ultrasonic wave transmitting port for installing the ultrasonic wave transceiver is formed in the inner shell, the ultrasonic wave receiving port for installing the ultrasonic wave reflector is formed in the inner shell, and the transmitting port and the receiving port are arranged oppositely in the horizontal direction.
In some embodiments: the outer shell is fixed at the bottom of the urea box, and the inner shell is fixed at the bottom of the outer shell.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a vehicle urea solution quality detection device capable of preventing bubble interference, and the vehicle urea solution quality detection device capable of preventing bubble interference is provided with a bubble eliminator, the bubble eliminator is arranged in a urea box and immersed in urea solution, the bubble eliminator comprises an outer shell with a hollow inner part, the outer shell is provided with a liquid inlet and an air outlet, which are arranged in a height difference mode, and the position of the air outlet is higher than the liquid inlet; quality detector, this quality detector arrange the shell in, quality detector includes the hollow interior casing of inside, is equipped with the detection module who detects the urea solution quality in the interior casing, has seted up the feed liquor hole that the opening up on the interior casing.
Consequently, the automobile-used urea solution quality detection device of this application that prevents bubble interference sets up the bubble annihilator in the urea case and immerses in urea solution, sets up inlet and the gas vent that the discrepancy in elevation set up on the shell body of bubble annihilator, and the position of gas vent is higher than the inlet. The urea solution in the urea box enters the outer shell from the liquid inlet of the outer shell, and the bubbles in the urea solution in the outer shell automatically float up and are discharged from the air outlet of the outer shell, so that the number of the bubbles in the urea solution in the outer shell is reduced, and one-time urea solution bubble removal is completed. And the shell body is immersed in the urea solution, the urea solution arranged in the shell body can not contact with the air, and no additional bubbles can be generated even if the urea solution arranged in the shell body vibrates.
The urea solution arranged in the outer shell enters the inner shell of the quality detector from the liquid inlet hole again, and the liquid inlet hole opening on the inner shell faces upwards, so that bubbles are difficult to enter the inner shell, the number of the bubbles of the urea solution arranged in the inner shell is further reduced, and secondary urea solution bubble removal is completed. The detection module carries out quality detection on the urea solution after the bubbles are removed twice, so that the signal interference of the bubbles in the urea solution to the detection module is greatly reduced, and the quality detection precision of the detection module to the urea solution is improved. The application has the advantages of simple structure, easiness in production and manufacturing, low cost and good effect. Is suitable for various urea boxes, and is convenient for enterprises to produce and manufacture in batches and reduce the cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a structure disposed in a urea tank according to an embodiment of the present disclosure;
FIG. 2 is an exploded view of the bubble eliminator and quality detector according to the embodiment of the present application;
FIG. 3 is a schematic structural diagram of an outer housing according to an embodiment of the present application;
FIG. 4 is an exploded view of the structure of a quality detector according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an inner housing according to an embodiment of the present application.
Reference numerals:
100. a bubble eliminator; 110. an outer housing; 111. a liquid inlet; 112. an exhaust port; 113. a liquid outlet; 120. a liquid inlet filter screen; 130. a filter screen of the exhaust port; 140. a urea outlet pipe;
200. a quality detector; 210. an inner housing; 211. an ultrasonic wave emitting port; 212. a liquid inlet hole; 213. a drain hole; 220. an ultrasonic transceiver; 230. an ultrasonic reflector; 240. a one-way valve; 300. urea box.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a vehicle urea solution quality detection device of anti-bubble interference, and the problem that the ultrasonic urea concentration sensor frequently reports errors due to bubbles generated in urea solution in the prior art can be solved.
Referring to fig. 1 to 5, an embodiment of the present application provides a device for detecting quality of a urea solution for a vehicle, which is capable of preventing bubble interference, and includes:
the air bubble eliminator 100, this air bubble eliminator 100 is placed in the urea case 300 and is immersed in the urea solution, the air bubble eliminator 100 includes the hollow outer casing 110 of inside, the outer casing 110 is fixed and located in the bottom of the urea case 300. The outer casing 110 is provided with a liquid inlet 111 and an air outlet 112 with different heights, and the air outlet 112 is higher than the liquid inlet 111.
The bubble eliminator 100 is fixedly connected with the bottom of the urea box 300, the urea solution in the urea box 300 completely submerges the bubble eliminator 100, the urea solution enters the inner cavity of the outer shell 110 from the liquid inlet 111 of the outer shell 110, bubbles entering the inner cavity of the outer shell 110 along with the urea solution automatically float up and are discharged from the air outlet 112 of the outer shell 110, and therefore the number of bubbles in the urea solution in the outer shell 110 is reduced.
The quality detector 200 is disposed in the inner cavity of the outer shell 110, the quality detector 200 includes an inner shell 210 with a hollow interior, the inner shell 210 is fixedly disposed at the bottom of the outer shell 110, a detection module for detecting the quality of the urea solution is disposed in the inner shell 210, and the inner shell 210 is provided with a liquid inlet hole 212 with an upward opening.
The quality detector 200 is fixed in the outer shell 110 of the bubble eliminator 100, the urea solution in the outer shell enters the inner cavity of the outer shell from the liquid inlet hole 212 on the inner shell 210, and because the opening of the liquid inlet hole 212 faces upwards, the bubbles in the urea solution are difficult to enter the inner cavity of the inner shell 210 in the floating process, and even if a small amount of bubbles enter the inner cavity of the inner shell 210, the bubbles can automatically float upwards and are discharged from the liquid inlet hole 212.
The automobile-used urea solution quality detection device of preventing bubble interference of this application embodiment sets up bubble eliminator 100 in urea case 300 and immerses in the urea solution, has seted up inlet 111 and the gas vent 112 that the discrepancy in elevation set up on bubble eliminator 100's shell body 110, and the position of gas vent 112 is higher than inlet 111. The urea solution in the urea tank 300 enters the outer shell 110 from the liquid inlet 111 of the outer shell 110, and the bubbles in the urea solution in the outer shell 110 automatically float upward and are discharged from the air outlet 112 of the outer shell 110, so that the number of bubbles in the urea solution in the outer shell 110 is reduced, and one-time urea solution bubble removal is completed. And the outer shell 110 is immersed in the urea solution, the urea solution arranged in the outer shell 110 can not contact with the outside air, and no additional bubbles can be generated even if the urea solution arranged in the outer shell 110 vibrates.
The urea solution placed in the outer shell 110 enters the inner shell 210 of the quality detector 200 again through the liquid inlet hole 212, and the liquid inlet hole 212 on the inner shell 210 is opened upwards, so that the bubbles are difficult to enter the inner shell 210, the number of the bubbles of the urea solution placed in the inner shell 210 is further reduced, and the secondary urea solution bubble removal is completed. The detection module carries out quality detection on the urea solution after the bubbles are removed twice, so that the signal interference of the bubbles in the urea solution to the detection module is greatly reduced, and the quality detection precision of the detection module to the urea solution is improved.
In some alternative embodiments: referring to fig. 2 and fig. 3, an embodiment of the present application provides an anti-bubble interference apparatus for detecting quality of a urea solution for a vehicle, where a liquid inlet 111 of the apparatus is disposed on a side wall of an outer casing 110, and a liquid inlet filter screen 120 is disposed on the outer casing 110 for filtering the urea solution entering the outer casing 110 through the liquid inlet 111.
The outer casing 110 of this application embodiment is preferably the rectangle structure of enclosing all around, and inlet 111 is equipped with two, and two inlets 111 are located the lateral wall of outer casing 110 respectively, and two inlets 111 are in the position that leans on as far as possible on outer casing 110 to guarantee that the liquid level of the urea solution in the urea case 300 also can get into outer casing 110 when very low, do not influence the quality that detection module normally detected the urea solution.
Be equipped with on outer casing 110 and filter the inlet filter screen 120 that gets into urea solution in outer casing 110 by inlet 111, this inlet filter screen 120 can filter the impurity or the ice piece that get into urea solution in outer casing 110, guarantees to get into the cleanliness factor of urea solution in outer casing 110, does not influence the quality that detection module normally detected urea solution.
In some alternative embodiments: referring to fig. 2 and 3, in the embodiment of the present application, a device for detecting the quality of a urea solution for a vehicle for preventing bubble interference is provided, an exhaust port 112 of the device for detecting the quality of a urea solution for a vehicle for preventing bubble interference is disposed at the top of an outer shell 110, and an exhaust port filter screen 130 for filtering the urea solution entering the outer shell 110 through the exhaust port 112 is disposed on the outer shell 110.
The gas vent 112 is arranged at the top of the outer shell 110, and after the urea solution in the urea box 300 enters the outer shell 110, the bubbles which enter the outer shell 110 along with the urea solution automatically float to the top of the outer shell 110 and gather, and are discharged from the gas vent 112 at the top of the outer shell 110 together.
The exhaust port filter screen 130 for filtering the urea solution entering the outer shell 110 through the exhaust port 112 is arranged on the outer shell 110, and the exhaust port filter screen 130 can filter impurities or ice slag entering the urea solution in the outer shell 110, so that the cleanliness of the urea solution entering the outer shell 110 is ensured, and the quality of the urea solution normally detected by the detection module is not influenced.
In some alternative embodiments: referring to fig. 2 and fig. 3, an embodiment of the present application provides an anti-bubble-interference vehicle urea solution quality detection apparatus, where an outer shell 110 of the anti-bubble-interference vehicle urea solution quality detection apparatus is further provided with a liquid outlet 113, and the liquid outlet 113 is located at the top of the outer shell 110. The liquid outlet 113 is connected to a urea outlet pipe 140 for outputting the urea solution in the outer shell 110 to the urea injection system.
In the embodiment of the present application, the outer casing 110 is further provided with a liquid outlet 113, and the liquid outlet 113 is connected with a urea liquid outlet pipe 140 for outputting the urea solution in the outer casing 110 to the urea injection system. The urea injection system sucks the urea solution in the outer shell 110 through the urea liquid outlet pipe 140, and injects the urea solution to the post-treatment to participate in the tail gas treatment. The urea outlet pipe 140 draws the filtered urea solution from the outer shell 110, so as to prevent the urea solution from blocking the urea circulation channel in the relevant parts.
Secondly, the top of the outer shell 110 is provided with a liquid outlet 113, and the urea liquid outlet pipe 140 can discharge the urea solution and the bubbles which are not discharged from the gas outlet 112 in time in the process of extracting the urea liquid in the outer shell 110, so that the elimination of the bubbles in the urea solution is further accelerated, and the number of the bubbles in the urea solution in the outer shell 110 is further reduced.
In some alternative embodiments: referring to fig. 5, in the embodiment of the present application, a liquid inlet hole 212 of the apparatus for detecting the quality of urea solution for vehicles is disposed at the top of an inner shell 210, and the liquid inlet hole 212 has a cross-shaped structure for breaking bubbles.
The inner shell 210 of the embodiment of the present application is preferably a rectangular structure with the periphery closed, the liquid inlet hole 212 is disposed at the top of the inner shell 210, the opening of the liquid inlet hole 212 faces upward, the urea solution in the outer shell 110 enters the inner cavity of the inner shell 210 from the liquid inlet hole 212, and the flow direction of the urea solution entering the inner cavity of the inner shell 210 is opposite to the floating direction of the bubbles, so that the bubbles are difficult to enter the inner shell 210 from the liquid inlet hole 212. Even bubbles entering the inner case 210 from the liquid inlet hole 212 automatically float upward and are discharged from the liquid inlet hole 212.
The liquid inlet hole 212 of the embodiment of the present application is preferably a cross-shaped structure, the shape of the liquid inlet hole 212 is narrow, and the bubbles are broken by the liquid inlet hole 212 when entering the inner housing 210 from the liquid inlet hole 212 of the cross-shaped structure. The liquid inlet hole 212 with the cross structure is not easy to be blocked by bubbles, and the fluidity of the urea solution is improved.
In some alternative embodiments: referring to fig. 4 and 5, in the embodiment of the present application, a liquid discharge hole 213 is formed in a bottom of an inner housing 210 of the apparatus for detecting quality of urea solution for vehicle for preventing bubble interference, and a check valve 240 for discharging urea solution in the inner housing 210 is disposed in the liquid discharge hole 213.
In the embodiment of the present invention, the bottom of the inner case 210 is provided with a drain hole 213, and a check valve 240 for discharging the urea solution in the inner case 210 is provided in the drain hole 213. When the liquid level of the urea solution in the urea tank 300 is not lower than the liquid level of the urea solution in the inner housing 210, the check valve 240 is in a closed state, and the urea solution outside the inner housing 210 is prevented from entering the inner housing 210 from the liquid discharge hole 213.
When the level of the urea solution in the urea tank 300 is lower than the level of the urea solution in the inner housing 210, the check valve 240 is in an open state to discharge the urea solution in the inner housing 210 from the drain hole 213. When guaranteeing to newly add new urea solution, newly add urea solution can get into in inner shell 210 to make the detection module detect newly added urea solution quality.
In some alternative embodiments: referring to fig. 4 and 5, an embodiment of the present application provides a device for detecting a quality of a urea solution for a vehicle, which is capable of preventing bubble interference, and a detection module of the device for detecting a quality of a urea solution for a vehicle includes an ultrasonic transceiver 220 and an ultrasonic reflector 230, and the ultrasonic transceiver 220 and the ultrasonic reflector 230 are spaced apart from each other on an inner housing 210 to detect a quality of a urea solution in the inner housing 210.
The ultrasonic transceiver 220 and the ultrasonic reflector 230 are disposed at the bottom of the inner case 210, and the ultrasonic waves emitted from the ultrasonic transceiver 220 are emitted to the ultrasonic reflector 230 in a horizontal direction.
The ultrasonic transceiver 220 is configured to generate ultrasonic waves with different frequencies and different amplitudes, and frequency and amplitude of the received ultrasonic waves to obtain corresponding ultrasonic attenuation coefficients, and calculate corresponding concentration values according to the ultrasonic attenuation coefficients. The ultrasonic reflector 230 reflects ultrasonic waves with different frequencies and different amplitudes, and can penetrate through urea solutions with different concentrations, so that the concentration of the urea solution can be quickly and effectively measured.
The ultrasonic transceiver 220 and the ultrasonic reflector 230 are disposed at the bottom of the inner housing 210 at a certain distance, and urea solution is filled between the ultrasonic transceiver 220 and the ultrasonic reflector 230, so as to transmit ultrasonic waves emitted from the ultrasonic transceiver 220 to the ultrasonic reflector 230 through the urea solution and then reflect the ultrasonic waves back to the ultrasonic transceiver 220, and average time of flight (TOF) is calculated through multiple ultrasonic cycles, thereby determining whether the quality of the urea solution is qualified.
In some alternative embodiments: referring to fig. 4 and 5, in the present embodiment, an inner housing 210 of the apparatus for detecting quality of urea solution for vehicle for preventing bubble interference is provided with an ultrasonic wave emitting port 211 for mounting an ultrasonic wave transceiver 220, the inner housing 210 is provided with an ultrasonic wave receiving port (not shown) for mounting an ultrasonic wave reflector 230, and the ultrasonic wave emitting port 211 and the ultrasonic wave receiving port are arranged in a horizontal direction and face each other.
In the embodiment of the present application, the inner housing 210 is provided with an ultrasonic transmitting port 211 for installing the ultrasonic transceiver 220, and the inner housing 210 is provided with an ultrasonic receiving port for installing the ultrasonic reflector 230. The ultrasonic transceiver 220 and the ultrasonic reflector 230 can be conveniently installed and arranged on the inner shell 210, the assembly difficulty of the ultrasonic transceiver 220 and the ultrasonic reflector 230 is reduced, and the assembly efficiency is improved.
Principle of operation
The embodiment of the application provides a vehicle urea solution quality detection device for preventing bubble interference, and the vehicle urea solution quality detection device for preventing bubble interference is provided with a bubble eliminator 100, wherein the bubble eliminator 100 is arranged in a urea box 300 and is immersed in urea solution, the bubble eliminator 100 comprises an outer shell 110 with a hollow inner part, the outer shell 110 is provided with a liquid inlet 111 and an air outlet 112 with height difference, and the air outlet 112 is higher than the liquid inlet 111; the quality detector 200 is arranged in the outer shell 110, the quality detector 200 comprises an inner shell 210 with a hollow interior, a detection module for detecting the quality of the urea solution is arranged in the inner shell 210, and a liquid inlet hole 212 with an upward opening is formed in the inner shell 210.
Therefore, the automotive urea solution quality detection device for preventing bubble interference of the present application sets the bubble eliminator 100 in the urea tank 300 and immerses the bubble eliminator in the urea solution, and the shell body 110 of the bubble eliminator 100 is provided with the liquid inlet 111 and the air outlet 112 with height difference, and the position of the air outlet 112 is higher than the liquid inlet 111. The urea solution in the urea tank 300 enters the outer shell 110 from the liquid inlet 111 of the outer shell 110, and the bubbles in the urea solution in the outer shell 110 automatically float upward and are discharged from the air outlet 112 of the outer shell 110, so that the number of bubbles in the urea solution in the outer shell 110 is reduced, and one-time urea solution bubble removal is completed. And the outer shell 110 is immersed in the urea solution, the urea solution arranged in the outer shell 110 can not contact with the outside air, and no additional bubbles can be generated even if the urea solution arranged in the outer shell 110 vibrates.
The urea solution placed in the outer shell 110 enters the inner shell 210 of the quality detector 200 again through the liquid inlet hole 212, and the liquid inlet hole 212 on the inner shell 210 is opened upwards, so that the bubbles are difficult to enter the inner shell 210, the number of the bubbles of the urea solution placed in the inner shell 210 is further reduced, and the secondary urea solution bubble removal is completed. The detection module carries out quality detection on the urea solution after the bubbles are removed twice, so that the signal interference of the bubbles in the urea solution to the detection module is greatly reduced, and the quality detection precision of the detection module to the urea solution is improved. The application has the advantages of simple structure, easiness in production and manufacturing, low cost and good effect. Is suitable for various urea boxes, and is convenient for enterprises to produce and manufacture in batches and reduce the cost.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments 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 application. Thus, the present application 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 (10)
1. The utility model provides a prevent automobile-used urea solution quality detection device of bubble interference which characterized in that includes:
the device comprises a bubble eliminator (100), wherein the bubble eliminator is arranged in a urea box (300) and is immersed in urea solution, the bubble eliminator (100) comprises an outer shell (110) with a hollow inner part, a liquid inlet (111) and an air outlet (112) which are arranged in a height difference mode are formed in the outer shell (110), and the position of the air outlet (112) is higher than that of the liquid inlet (111);
quality detector (200), quality detector (200) are arranged in outer shell (110), quality detector (200) are including inside hollow interior casing (210), be equipped with the detection module that detects the urea solution quality in interior casing (210), interior casing (210) is last to be seted up feed liquor hole (212) that the opening is up.
2. The apparatus for detecting the quality of urea solution for vehicle according to claim 1, wherein:
the liquid inlet (111) is arranged on the side wall of the outer shell (110), and a liquid inlet filter screen (120) for filtering urea solution entering the outer shell from the liquid inlet (111) is arranged on the outer shell (110).
3. The apparatus for detecting the quality of urea solution for vehicle according to claim 1, wherein:
the exhaust port (112) is arranged at the top of the outer shell (110), and an exhaust port filter screen (130) for filtering urea solution entering the outer shell (110) from the exhaust port (112) is arranged on the outer shell (110).
4. The apparatus for detecting quality of urea solution for vehicle according to any one of claims 1 to 3, wherein:
still seted up liquid outlet (113) on shell body (110), liquid outlet (113) are connected with and export urea solution in shell body (110) to urea injection system's urea drain pipe (140).
5. The apparatus for detecting the quality of urea solution for vehicle according to claim 1, wherein:
the liquid inlet hole (212) is arranged at the top of the inner shell (210), and the liquid inlet hole (212) is of a cross structure for breaking bubbles.
6. The apparatus for detecting the quality of urea solution for vehicle according to claim 1, wherein:
the bottom of the inner shell (210) is provided with a liquid discharge hole (213), and a one-way valve (240) for discharging the urea solution in the inner shell (210) is arranged in the liquid discharge hole (213).
7. The apparatus for detecting the quality of urea solution for vehicle according to claim 1, wherein:
the detection module comprises an ultrasonic transceiver (220) and an ultrasonic reflector (230), and the ultrasonic transceiver (220) and the ultrasonic reflector (230) are arranged on the inner shell (210) at intervals to detect the quality of the urea solution in the inner shell (210).
8. The apparatus for detecting the quality of urea solution for vehicle according to claim 7, wherein:
the ultrasonic transceiver (220) and the ultrasonic reflector (230) are arranged at the bottom of the inner shell (210), and the ultrasonic waves emitted by the ultrasonic transceiver (220) are emitted to the ultrasonic reflector (230) in the horizontal direction.
9. The apparatus for detecting the quality of urea solution for vehicle according to claim 7, wherein:
the ultrasonic wave transmitting and receiving device is characterized in that an ultrasonic wave transmitting port (211) for installing an ultrasonic wave transceiver is formed in the inner shell (210), an ultrasonic wave receiving port for installing an ultrasonic wave reflector is formed in the inner shell (210), and the ultrasonic wave transmitting port (211) and the receiving port are arranged in a horizontal direction in a relative mode.
10. The apparatus for detecting the quality of urea solution for vehicle according to claim 1, wherein:
the outer shell (110) is fixed at the bottom of the urea box (300), and the inner shell (210) is fixed at the bottom of the outer shell (110).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110867813.0A CN113607809B (en) | 2021-07-28 | 2021-07-28 | Automobile-used urea solution quality detection device of anti-bubble interference |
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| CN202110867813.0A CN113607809B (en) | 2021-07-28 | 2021-07-28 | Automobile-used urea solution quality detection device of anti-bubble interference |
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| CN113607809B CN113607809B (en) | 2024-04-12 |
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| CN113607809B (en) | 2024-04-12 |
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