CN213398326U - Integrated urea detection sensor - Google Patents
Integrated urea detection sensor Download PDFInfo
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- CN213398326U CN213398326U CN202022265950.0U CN202022265950U CN213398326U CN 213398326 U CN213398326 U CN 213398326U CN 202022265950 U CN202022265950 U CN 202022265950U CN 213398326 U CN213398326 U CN 213398326U
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Abstract
The utility model relates to an integrated form urea detects sensor belongs to diesel engine urea and detects technical field. The acoustic wave transmission device comprises a shell, a probe, a plane reflecting plate and an inclined plane reflecting plate, wherein a channel for acoustic wave transmission is arranged in the shell, the probe is arranged at one end of the shell, the probe is provided with a cavity, the cavity is positioned in the channel, a temperature sensor and an energy transducer are arranged in the cavity, the temperature sensor is positioned at the top side of the cavity, the energy transducer is positioned at the front side of the cavity, an acoustic wave emission hole is formed in the front side of the cavity, the plane reflecting plate is vertically arranged in the shell and is arranged on the lower half surface of the channel, the inclined plane reflecting plate is arranged on the upper half surface of the channel of the shell at an angle of 45 degrees; the utility model discloses utilize integrated mode to close temperature sensor, transducer, reflecting plate in an organic whole, can play temperature sensor, level sensor and quality sensor's effect simultaneously, simple structure, preparation, simple to operate do not account for the space, and are with low costs.
Description
Technical Field
The utility model relates to a diesel engine urea detects technical field, especially relates to an integrated form urea detects sensor.
Background
As the national six emission standards are about to be fully implemented, an SCR system (selective catalytic reduction system) as an after-treatment device has become a mainstream configuration of diesel vehicles. The SCR system reacts urea solution and discharged nitrogen oxides into water and nitrogen, so that the national emission standard is reached. In the process of using and maintaining the urea solution, the inferior urea solution, the little urea solution or the frozen urea solution can cause the discharge not to reach the standard. With the forced implementation of the OBD on-board diagnostic system, the vehicle can be torque-limited or even start-up limited in the case of emission failure. Thus, the quality, level and temperature of the urea solution directly affect the emission performance of the vehicle. Based on the above-mentioned situation, it is very necessary to detect the quality, level and temperature of the urea solution.
At present, urea sensors are mainly mounted on the support of the liquid suction pipe of the urea tank. The sensor for urea mainly comprises a quality sensor, a liquid level sensor and a temperature sensor. The sensors are relatively separated and independent, so that the problems of more hardware connecting ports, complex installation, large volume, high cost and the like are caused.
SUMMERY OF THE UTILITY MODEL
To defect and not enough problem among the prior art, the utility model provides an integrated form urea detects sensor utilizes integrated mode to close temperature sensor, transducer, reflecting plate in an organic whole, can play temperature sensor, level sensor and quality sensor's effect simultaneously, simple structure, preparation, simple to operate do not account for the space, and is with low costs.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an integrated form urea detects sensor, includes casing, probe, plane reflecting plate and inclined plane reflecting plate, be equipped with the passageway that the sound wave transmission was used in the casing, the probe is installed to the one end of casing, the probe is equipped with the cavity, and the cavity is located the passageway, is equipped with temperature sensor and transducer in the cavity, and temperature sensor is located cavity top side, and the transducer is located the cavity front side, the cavity front side is equipped with the sound wave emission hole, the plane reflecting plate is vertical to be installed in the casing and to be arranged in the lower half of passageway, and the inclined plane reflecting plate is 45 degrees angles and arranges the first face at casing passageway, the casing of inclined plane reflecting plate top is equipped with the sound wave and rolls over.
Furthermore, the bottom of the shell is provided with a fixed seat, and the fixed seat is provided with a mounting hole fixed with the urea box.
Furthermore, a first mounting groove of the plane reflecting plate is formed in the side face of the shell, a fixing block is arranged on the shell adjacent to the first mounting groove, and a positioning hole fixed with the plane reflecting plate is formed in the fixing block.
Furthermore, a second mounting groove matched with the inclined reflection plate is formed in one side of the shell, and the second mounting groove extends into the shell on the other side of the channel.
Furthermore, the probe is provided with a wire outlet cover plate, and the wire outlet cover plate is provided with a mounting hole fixed with the shell.
Further, the temperature sensor may employ a thermistor.
Further, the channel adopts a circular through hole.
Furthermore, the reflecting plate is made of a stainless steel plate.
The utility model discloses following beneficial effect has: the utility model realizes the functions of the quality sensor through the transducer and the plane reflecting plate, realizes the functions of the liquid level sensor through the transducer and the inclined plane reflecting plate, integrates the functions of the temperature sensor, the quality sensor and the liquid level sensor into a whole, realizes the convenient installation of the device, does not occupy space and reduces the cost; the shell not only plays a role in integration, installation and fixation, but also can fix the sound wave transmission channel, so that the sound wave is prevented from diffusing all around to influence the detection effect; the quality sensor and the liquid level sensor share one transducer, and the quality and the liquid level of the urea liquid are measured by the same ultrasonic transceiving integrated probe, so that the cost is obviously reduced, the size is reduced, and the overall structure is simpler and more reasonable.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a left side view of the structure of the present invention;
FIG. 3 is a top view of the present invention;
fig. 4 is a schematic view of the probe structure of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1-4: the utility model provides an integrated form urea detects sensor, includes casing 1, probe 2, plane reflecting plate 3 and inclined plane reflecting plate 4, be equipped with the passageway 14 that the sound wave transmission was used in casing 1, probe 2 is installed to the one end of casing 1, probe 2 is equipped with cavity 23, and cavity 23 is located passageway 14, is equipped with temperature sensor 21 and transducer 22 in the cavity 23, and temperature sensor 21 is located cavity 23 top side, and transducer 22 is located cavity 23 front side, cavity 23 front side is equipped with sound wave emission hole 231, 3 vertical installations of plane reflecting plate are in casing 1 and are arranged in the lower half of passageway 14, and inclined plane reflecting plate 4 is 45 degrees angles and arranges the first half at casing passageway 14, casing 1 of 4 tops of inclined plane reflecting plate is equipped with sound wave refraction hole 13.
The bottom of the shell 1 is provided with a fixed seat 11, and the fixed seat 11 is provided with a mounting hole 111 fixed with the urea box.
The side surface of the shell 1 is provided with a first mounting groove 31 of the plane reflection plate, the shell adjacent to the first mounting groove 31 is provided with a fixing block 12, and the fixing block 12 is provided with a positioning hole 121 fixed with the plane reflection plate 3.
A second mounting groove 41 matched with the inclined reflection plate 4 is formed in one side of the housing, and the second mounting groove 41 extends into the housing 1 on the other side of the channel 14.
The probe 2 is provided with a wire outlet cover plate 24, and the wire outlet cover plate 24 is provided with a mounting hole 241 fixed with the shell 1.
The utility model discloses an operating principle utilizes the sound wave different at the propagation velocity of different urea solutions to judge urea solution's quality, calculate the liquid level height through the sound wave propagation time in urea solution.
The ultrasonic wave sent by the transducer is reflected back to the transducer by the plane reflecting plate, the time of the whole process is recorded, and the distance between the transducer and the plane reflecting plate is fixed, so that the propagation speed of the urea solution is calculated. Namely, the transducer and the plane reflection plate realize the function of the quality sensor.
Because the sound waves are diffused in the channel, a part of the sound waves can be transmitted to the 45-degree inclined plane reflecting plate to be refracted to a urea solution and air separation point, and then the reflected sound waves return to the energy converter through the inclined plane reflecting plate, so that the height of the liquid level can be calculated, and the function of the liquid level sensor is realized through the energy converter and the inclined plane reflecting plate.
The temperature of the urea solution is measured by conducting the temperature change of the urea concentration to a temperature sensor.
The utility model has the advantages of simple and reasonable structure, integrate in an organic whole quality sensor, level sensor and temperature sensor's function, and only need use a transducer to be used for measuring urea solution's quality and liquid level for whole occupation space is little, and is with low costs, and preparation and installation are more convenient.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, and the present invention will have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An integrated urea detection sensor, comprising: including casing, probe, plane reflecting plate and inclined plane reflecting plate, be equipped with the passageway that the sound wave transmission was used in the casing, the probe is installed to the one end of casing, the probe is equipped with the cavity, and the cavity is located the passageway, is equipped with temperature sensor and transducer in the cavity, and temperature sensor is located cavity top side, and the transducer is located the cavity front side, the cavity front side is equipped with the sound wave emission hole, the vertical installation of plane reflecting plate is in the casing and arranges in the lower half of passageway, and the inclined plane reflecting plate is 45 degrees angles and arranges the first half at casing passageway, the casing of inclined plane reflecting plate top is equipped with the sound wave and rolls over the hole.
2. An integrated urea detection sensor according to claim 1, wherein: the bottom of the shell is provided with a fixed seat, and the fixed seat is provided with a mounting hole fixed with the urea box.
3. An integrated urea detection sensor according to claim 1, wherein: the side face of the shell is provided with a first mounting groove of the plane reflecting plate, the shell adjacent to the first mounting groove is provided with a fixing block, and the fixing block is provided with a positioning hole fixed with the plane reflecting plate.
4. An integrated urea detection sensor according to claim 1, wherein: and a second mounting groove matched with the inclined plane reflecting plate is formed in one side of the shell, and the second mounting groove extends into the other side of the channel.
5. An integrated urea detection sensor according to claim 1, wherein: the probe is provided with a wire outlet cover plate, and the wire outlet cover plate is provided with a mounting hole fixed with the shell.
6. An integrated urea detection sensor according to claim 1, wherein: the temperature sensor may employ a thermistor.
7. An integrated urea detection sensor according to claim 1, wherein: the channel adopts a circular through hole.
8. An integrated urea detection sensor according to claim 1, wherein: the reflecting plate is made of a stainless steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022265950.0U CN213398326U (en) | 2020-10-13 | 2020-10-13 | Integrated urea detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022265950.0U CN213398326U (en) | 2020-10-13 | 2020-10-13 | Integrated urea detection sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213398326U true CN213398326U (en) | 2021-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022265950.0U Active CN213398326U (en) | 2020-10-13 | 2020-10-13 | Integrated urea detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213398326U (en) |
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2020
- 2020-10-13 CN CN202022265950.0U patent/CN213398326U/en active Active
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