阅读说明：本技术 一种尿素品质传感器探测装置及车辆 (Urea quality sensor detection device and vehicle ) 是由 韦安阳 朱宏志 贾昭远 于松乔 于 2021-06-21 设计创作，主要内容包括：本发明涉及一种尿素品质传感器探测装置,包括具有一内腔的壳体、探测组件以及吸附杆,所述内腔中填充尿素溶液,所述探测组件被构造为能够于所述内腔中尿素溶液内形成一探测区域,所述吸附杆设置于所述内腔中且浸泡于所述尿素溶液内；其中,所述吸附杆设置于所述探测区域外并构造为能够吸附尿素溶液产生的气泡。本发明通过设置于探测区域外周的吸附杆能够吸附尿素溶液中产生的气泡,避免气泡影响尿素溶液检测的结果,提高尿素溶液检测的精度,且本申请结构简单,方便操作。(The invention relates to a urea quality sensor detection device, which comprises a shell with an inner cavity, a detection assembly and an adsorption rod, wherein the inner cavity is filled with urea solution, the detection assembly is constructed to be capable of forming a detection area in the urea solution in the inner cavity, and the adsorption rod is arranged in the inner cavity and soaked in the urea solution; wherein the adsorption rod is disposed outside the detection region and configured to adsorb bubbles generated from the urea solution. According to the invention, the adsorption rods arranged on the periphery of the detection area can adsorb the bubbles generated in the urea solution, so that the bubbles are prevented from influencing the detection result of the urea solution, the detection precision of the urea solution is improved, and the device has a simple structure and is convenient to operate.)

1. A urea quality sensor detection device is characterized by comprising a shell with an inner cavity, a detection assembly and an adsorption rod, wherein the inner cavity is filled with urea solution, the detection assembly is constructed to be capable of forming a detection area in the urea solution in the inner cavity, and the adsorption rod is arranged in the inner cavity and soaked in the urea solution;

wherein the adsorption rod is disposed outside the detection region and configured to adsorb bubbles generated from the urea solution.

2. The urea quality sensor detecting device according to claim 1, wherein the adsorption rod includes a rod body and an adsorption surface formed on an outer periphery of the rod body, the adsorption surface adsorbing the air bubbles to an outer surface thereof.

3. The urea quality sensor detecting device according to claim 2, wherein the adsorption rod includes a plurality of adsorption portions provided in a circumferential direction on an outer periphery of the rod body, and outer surfaces of the plurality of adsorption portions are each configured as the adsorption surface.

4. The urea quality sensor detecting device according to claim 3, wherein each of the adsorption portions extends lengthwise in an axial direction of the rod body and is radially provided in a radial direction of the rod body.

5. The urea quality sensor probe according to claim 4, wherein an axial direction of the rod body in the adsorption rod is perpendicular to a moving direction of the air bubbles.

6. The urea quality sensor probe of claim 3, wherein the adsorption face has a rough surface.

7. The urea quality sensor detecting device according to claim 1, wherein the adsorption rod includes a plurality of adsorption rods, and all of the adsorption rods are disposed around the detection area.

8. The urea quality sensor probe of claim 1, wherein the adsorption rod is a plastic rod.

9. The urea quality sensor probe of claim 1, wherein the housing includes a bottom plate disposed opposite the top plate, a top plate, and side plates connected between the bottom plate and the top plate and collectively configured to form the internal cavity; the detection assembly comprises an ultrasonic generator and an ultrasonic receiver;

the side plates comprise a first side plate and a second side plate which are arranged oppositely, the adsorption rod is arranged on the first side plate, the ultrasonic generator and the ultrasonic receiver are jointly arranged on one of the first side plate and the second side plate, and the other of the first side plate and the second side plate is constructed as a reflecting plate.

10. A vehicle comprising a urea quality sensor detection device according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of engines, in particular to a urea quality sensor detection device and a vehicle.

Background

The SCR system is a catalytic converter that is installed in an exhaust system of a diesel engine to catalytically reduce nitrogen oxides in the exhaust system into nitrogen gas and water by injecting a reducing agent. Currently, SCR systems are commonly used in vehicles, however, the SCR systems are used by being equipped with a storage device for urea solution, commonly called a urea tank.

The concentration of the urea solution directly affects the catalytic reduction effect, and a urea quality sensor is usually arranged in the urea tank and detects the concentration of the urea solution through ultrasonic waves. However, the urea solution in the urea tank may shake due to external force and other factors, for example, the urea tank may shake due to jolt during driving of a vehicle, and a large amount of bubbles may be generated during the jolt. The generation of bubbles can affect the detection precision of ultrasonic waves, so that the detection result has larger deviation, even the failure mode of the whole vehicle is triggered, and the normal running of the vehicle is affected.

Disclosure of Invention

In view of the above, it is necessary to provide a urea quality sensor detection device and a vehicle that can remove bubbles in a detection area by adsorbing the bubbles and improve detection accuracy, in order to solve the problem that the bubbles generated in a urea solution affect ultrasonic detection accuracy.

A urea quality sensor detection device comprises a shell with an inner cavity, a detection assembly and an adsorption rod, wherein the inner cavity is filled with urea solution, the detection assembly is constructed to be capable of forming a detection area in the urea solution in the inner cavity, and the adsorption rod is arranged in the inner cavity and soaked in the urea solution;

wherein the adsorption rod is disposed outside the detection region and configured to adsorb bubbles generated from the urea solution.

In one embodiment, the adsorption rod comprises a rod body and an adsorption surface formed on the periphery of the rod body, and the adsorption surface adsorbs the bubbles on the outer surface of the adsorption rod.

In one embodiment, the adsorption rod includes a plurality of adsorption portions provided in a circumferential direction on an outer periphery of the rod body, and outer surfaces of the plurality of adsorption portions are each configured as the adsorption surface.

In one embodiment, each of the suction portions extends lengthwise in an axial direction of the rod body and is radially disposed in a radial direction of the rod body.

In one embodiment, the axial direction of the rod body in the adsorption rod is perpendicular to the moving direction of the air bubbles.

In one embodiment, the adsorption surface has a rough surface.

In one embodiment, the number of the adsorption rods is multiple, and all the adsorption rods are arranged around the detection area.

In one embodiment, the adsorption bar is a plastic bar.

In one embodiment, the housing comprises a bottom plate, a top plate and a side plate, wherein the bottom plate is arranged opposite to the top plate, and the side plate is connected between the bottom plate and the top plate and is jointly configured to form the inner cavity; the detection assembly comprises an ultrasonic generator and an ultrasonic receiver;

the side plates comprise a first side plate and a second side plate which are arranged oppositely, the adsorption rod is arranged on the first side plate, the ultrasonic generator and the ultrasonic receiver are jointly arranged on one of the first side plate and the second side plate, and the other of the first side plate and the second side plate is constructed as a reflecting plate.

The invention also provides a vehicle comprising the urea quality sensor detection device.

Above-mentioned urea quality sensor detecting device and vehicle sets up the bubble that produces in can adsorbing the urea solution in the absorption pole of surveying regional periphery, avoids the bubble to influence the result that the urea solution detected, improves the precision that the urea solution detected, and this application simple structure, convenient operation.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a urea quality sensor detection device according to an embodiment of the present application;

FIG. 2 is a front view of an adsorption rod in the urea quality sensor probe of FIG. 1;

wherein: 100-urea quality sensor detection device, 10-shell, 20-adsorption rod, 11-bottom plate, 12-top plate, 21-rod body, 22-adsorption surface, 31-ultrasonic generator, 32-ultrasonic receiver, 131-first side plate, 132-second side plate, 231-first adsorption part, 232-second adsorption part, 233-third adsorption part, 234-fourth adsorption part, 241-first sub-adsorption rod, 242-second sub-adsorption rod, 243-third sub-adsorption rod and 244-fourth sub-adsorption rod.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Fig. 1 is a schematic view showing the overall configuration of a urea quality sensor detecting device according to an embodiment of the present invention, and fig. 2 is a front view showing an adsorption rod according to an embodiment of the present invention.

Referring to fig. 1, an embodiment of the invention provides a urea quality sensor detecting device 100, which includes a housing 10 having an inner cavity, a detecting element, and an adsorption rod 20. Wherein, the inner cavity is filled with urea liquid. The probe assembly is configured to form a probe region within the urea solution in the inner chamber, and the adsorption rod 20 is disposed in the inner chamber and soaked in the urea solution. The adsorption rod 20 is disposed outside the detection region and configured to adsorb bubbles generated from the urea solution.

When the housing 10 is shaken by an external force, the urea solution in the inner cavity tends to generate bubbles due to the shaking. If the generated bubbles are located in the detection area, the detection result of the urea solution will be affected, and the detection result is inaccurate. The air bubbles in the detection area are adsorbed by the adsorption rod 20, so that the detection area is ensured not to contain the air bubbles, and the detection result is more accurate.

Further, the adsorption rod 20 includes a rod body 21 and an adsorption surface 22 formed on the outer periphery of the rod body 21, and the adsorption surface 22 adsorbs bubbles to the outer surface thereof. The adsorption rod 20 is equivalent to a condensation nucleus in the urea solution, and when the urea solution shakes by an external force to generate bubbles, the bubbles will be gathered on the adsorption surface 22 under the action of the surface tension of the liquid. Compared with the mode of actively discharging bubbles by using a driving device, the adsorption surface 22 is in a static state and does not actively generate additional bubbles in the urea solution, so that the adsorption effect on the bubbles is better.

As shown in fig. 2, further, the adsorption rod 20 includes a plurality of adsorption portions provided in the circumferential direction on the outer periphery of the rod body, and the outer surfaces of the plurality of adsorption portions are configured as adsorption surfaces 22. The provision of a plurality of adsorption portions can increase the surface area of the adsorption surface 22, thereby having a stronger adsorption effect on bubbles.

Further, each of the suction portions extends lengthwise in the axial direction of the rod body and is radially arranged in the radial direction of the rod body 21.

As shown in fig. 2, in the present embodiment, the adsorption rod 20 includes a first adsorption part 231, a second adsorption part 232, a third adsorption part 233, and a fourth adsorption part 234, which all extend lengthwise in the axial direction of the rod body 21 and are radially arranged in the radial direction of the rod body 21. The first adsorption part 231, the second adsorption part 232, the third adsorption part 233, and the fourth adsorption part 234 are perpendicular to each other two by two and connected to each other. Namely, the cross section of the adsorption rod 20 is in a cross structure. It will be appreciated that in other embodiments, the suction portion may comprise two, three or more. That is, the surface area of the adsorption surface 22 is increased by providing the adsorption portion, so that the adsorption strength of the adsorption surface 22 to the bubbles is improved. And is not limited herein.

The axial direction of the rod body 21 in the adsorption rod 20 is perpendicular to the movement direction of the air bubbles, so that the adsorption rod 20 has the largest contact area between the adsorption surface 22 and the air bubbles on the basis of not influencing the detection result of the detection area, and the adsorption effect of the adsorption rod 20 on the air bubbles is improved.

In this particular embodiment, the suction surface 22 has a rough surface. Rough surfaces are more destructive to unstable systems than smooth surfaces. Namely, when the urea solution is forced to shake to generate bubbles, the system is very unstable. In this case, the adsorption surface having a rough surface can adsorb bubbles in the system more efficiently, and the system tends to be stable.

Specifically, the adsorption rod 20 includes a plurality of adsorption rods, and all the adsorption rods 20 are disposed around the detection area. The plurality of adsorption rods 20 are arranged around the periphery of the detection region, and air bubbles in the detection region can be adsorbed on the plurality of adsorption rods 20. Thereby ensuring that the urea solution in the detection area does not contain bubbles, and the detection result is more accurate.

In this embodiment, the adsorption rod 20 includes a first sub adsorption rod 241, a second sub adsorption rod 242, a third sub adsorption rod 243, and a fourth sub adsorption rod 244, and the first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243, and the fourth sub adsorption rod 244 are disposed in central symmetry with the detection region as a center, so as to surround the detection region therein. After the bubbles in the urea solution are gathered and adsorbed on the first sub-adsorption rod 241, the second sub-adsorption rod 242, the third sub-adsorption rod 243 and the fourth sub-adsorption rod 244, the detection area does not contain bubbles, and the detection result is more accurate.

The adsorption rod 20 is a plastic rod. On the basis of ensuring the adsorption effect on the air bubbles, the plastic rod is lower in cost and lighter in weight and is easier to connect and fix with the shell 10.

The housing 10 includes a bottom plate 11, a top plate 12, and side plates, wherein the bottom plate 11 is disposed opposite to the top plate 12, and the side plates are connected between the bottom plate 11 and the top plate 12 and jointly configured to form an inner cavity. The probe assembly includes an ultrasonic generator 31 and an ultrasonic receiver 32. The side plates include a first side plate 131 and a second side plate 132 disposed opposite to each other, the absorption rod 20 is disposed on the first side plate 131, the ultrasonic generator 31 and the ultrasonic receiver 32 are disposed on one of the first side plate 131 and the second side plate 132, and the other of the first side plate 131 and the second side plate 132 is configured as a reflection plate.

In the present embodiment, the ultrasonic generator 31 and the ultrasonic receiver 32 are commonly disposed on the first side plate 131, and the second side plate 132 opposite to the first side plate 131 is configured as a reflecting plate. The adsorption lever 20 is located between the first side plate 131 and the second side plate 132. The urea solution is filled between the first side plate 131 and the second side plate 132, and a detection region is formed between the ultrasonic generator 31 and the ultrasonic receiver 32 and the reflection plate. The ultrasonic wave emitted by the ultrasonic generator 31 passes through the urea solution and reaches the reflecting plate, the ultrasonic wave reflected by the reflecting plate returns to the ultrasonic receiver 32 again, and the actual concentration of the urea solution in the detection area can be obtained according to the propagation speed of the ultrasonic wave.

After the housing 10 is placed or fixed at a predetermined position by the bottom plate 11, the liquid level of the urea solution in the inner cavity is parallel to the bottom plate 11 and the top plate 12, and is perpendicular to the first side plate 131 and the second side plate 132. When bubbles are generated in the urea solution, the bubbles are generated at the bottom plate 11 and gradually rise toward the top plate 12. The first sub adsorption bar 241, the second sub adsorption bar 242, the third sub adsorption bar 243 and the fourth sub adsorption bar 244 are all vertically disposed on the first side plate 131, that is, the first sub adsorption bar 241, the second sub adsorption bar 242, the third sub adsorption bar 243 and the fourth sub adsorption bar 244 are all perpendicular to the moving direction of the air bubbles. At this time, the contact area between the first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243, and the fourth sub adsorption rod 244 and the air bubbles is the maximum value, and the air bubble adsorption effect is further improved.

Based on the same concept as the urea quality sensor detecting device 100 described above, the present invention also provides a vehicle including the above-mentioned urea quality sensor detecting device 100.

When the invention is used in particular, a certain amount of urea solution is filled in the inner cavity. The ultrasonic generator 31 and the ultrasonic receiver 32 form a detection region with the reflecting plate. When the concentration of the urea solution is detected, the ultrasonic generator 31 emits ultrasonic waves, and the ultrasonic waves reach the reflecting plate through the urea solution in the detection area, are reflected by the reflecting plate, and return to the ultrasonic receiver 32 again. In this process, when the urea solution is shaken by a force to generate bubbles, the bubbles move from the bottom plate 11 side toward the top plate 12 side. The first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243, and the fourth sub adsorption rod 244 block and adsorb air bubbles to bubbles that are about to enter the detection region, and for a small amount of air bubbles that have entered the detection region, the first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243, and the fourth sub adsorption rod 244 adsorb air bubbles to them and discharge the air bubbles out of the detection region, ensuring that the detection region does not contain air bubbles. Therefore, the detection result of the urea solution is more accurate.

The urea quality sensor detecting device 100 and the vehicle in the above embodiment have at least the following advantages:

1) the first sub-adsorption rod 241, the second sub-adsorption rod 242, the third sub-adsorption rod 243 and the fourth sub-adsorption rod 244 which are arranged around the detection area in a surrounding manner block and adsorb air bubbles in the detection area, so that the detection result is more accurate because no air bubbles are contained in the detection area in the detection process;

2) the first adsorption part 231, the second adsorption part 232, the third adsorption part 233 and the fourth adsorption part 234 are connected with each other to form the adsorption surface 22, so that the surface area of the adsorption surface 22, namely the contact area of the bubbles and the adsorption surface 22 is enlarged, and the adsorption strength of the adsorption surface 22 to the bubbles is improved;

3) the first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243 and the fourth sub adsorption rod 244 are all arranged perpendicular to the first side plate 131, even if the first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243 and the fourth sub adsorption rod 244 are all perpendicular to the movement direction of the air bubbles, the contact area of the first sub adsorption rod 241, the second sub adsorption rod 242, the third sub adsorption rod 243 and the fourth sub adsorption rod 244 with the air bubbles is maximized, and thus the adsorption effect is better;

4) the adsorption rod 20 is a plastic rod, which has lower cost, and is easier to connect and fix with the housing 10, and is simple and easy to operate.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.