Urea liquid supply integrated structure

Abstract

The utility model discloses a urea liquid supply integrated structure, which relates to the field of vehicle urea supply devices and comprises a tank sealing metal disc. And the acting assembly comprises a urea channel penetrating through the tank body sealing metal disc, the urea channel comprises a urea feeding pipe and a urea supply pipe, the tank body sealing metal disc is further provided with a heating channel used for stretching into the urea tank, and a flow inlet and a flow outlet of the heating channel both stretch out of the top face of the tank body sealing metal disc. The urea feeding pipe and the urea supply pipe are integrated on the tank body sealing metal disc, the structural integrity is improved, meanwhile, compared with a traditional mode that a corrosion-resistant metal feeding port is additionally formed in a urea tank body made of a composite material independently, the urea feeding pipe and the tank body sealing metal disc are made of the same material, the connection stability of the urea feeding pipe and the tank body sealing metal disc can be improved, and the service life of the urea tank is prolonged. And manufacturing processes are reduced.

Description

Technical Field

[0001] The utility model relates to the field of vehicle urea supply devices, in particular to a urea liquid supply integrated structure. Background Art

[0002] Urea tanks, also known as urea storage tanks or urea tanks, are primarily used to store urea solution. During diesel engine operation, this solution reacts with nitrogen oxides through the SCR (Selective Catalytic Reduction) system, producing harmless nitrogen and water vapor, thereby reducing emissions. The urea supply structure is responsible for drawing urea solution from the urea tank and delivering it to the nozzle through pipelines.

[0003] The commonly used urea tank body currently has a urea supply structure connection port and a urea tank feeding port respectively, and the overall integration needs to be improved. At the same time, since the tank body material is a composite material and the feeding port material is generally a metal resistant to urea corrosion, the two materials are inconsistent. Therefore, in order to connect the tank body and the feeding port, a relatively complex process is involved, which not only increases the cost of the tank body and the feeding port, but also the reliability of the connection between different materials will be inferior to that between the same materials. Utility Model Content

[0004] The present application provides an integrated urea liquid supply structure, which can solve the technical problems in the prior art that the traditional urea feeding port is separately opened on the urea tank body, which not only affects the overall integration of the structure, but also has low connection reliability and complex connection process between the urea feeding port and the urea tank body made of different materials.

[0005] The embodiment of the present application provides an integrated structure for supplying urea liquid, including:

[0006] Tank sealing metal disc;

[0007] The active component includes a urea channel that passes through the tank sealing metal disk, and the urea channel includes a urea feeding pipe and a urea supply pipe. The tank sealing metal disk is also provided with a heating channel for extending into the urea tank, and the inlet and outlet of the heating channel both extend outward from the top surface of the tank sealing metal disk.

[0008] In one embodiment, one end of the urea feeding pipe extends to the bottom surface of the tank sealing metal disk, and the other end protrudes from the top surface of the tank sealing metal disk and extends horizontally.

[0009] In one embodiment, the urea feeding pipe is provided with a detachable feeding port sealing cover at one end thereof protruding from the top surface of the tank sealing metal disk.

[0010] In one embodiment, one end of the urea supply pipe protrudes from the top surface of the tank sealing metal disk, and the other end extends to the bottom surface of the tank sealing metal disk.

[0011] In one embodiment, a urea solution filter is provided at one end of the urea supply pipe extending to the bottom surface of the tank sealing metal disk.

[0012] In one embodiment, the heating channel includes a heating tube, the inlet and outlet are respectively located at both ends of the heating tube, and the tube body of the heating tube passes through the tank sealing metal disk and extends in a direction away from the bottom surface of the tank sealing metal disk.

[0013] In one embodiment, the action component further includes a sensing unit.

[0014] In one embodiment, the sensing unit includes a support rod located on the bottom surface of the tank sealing metal disk, and a urea liquid level sensor is provided on the support rod.

[0015] In one embodiment, the sensing unit further includes a sensor connector disposed on the top surface of the tank sealing metal disk.

[0016] In one embodiment, a pressure regulating unit is further provided on the tank body sealing metal disk, and the pressure regulating unit includes an inflation pipe and an exhaust pipe passing through the tank body sealing metal disk.

[0017] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0018] The urea liquid supply integrated structure in the present application integrates the urea feeding pipe and the urea supply pipe on the tank body sealing metal disk, which can realize the injection of urea solution and the supply of vehicle, achieves a high degree of structural integration, and improves the sealing performance of the urea tank body. At the same time, compared with the traditional method of adding a corrosion-resistant metal feed port to the composite material urea tank body, since the urea feeding pipe and the tank body sealing metal disk in the present application are made of the same material, the unstable factor of the connection between different materials is avoided, the connection stability between the two can be effectively improved, and the manufacturing process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A front view of a urea liquid supply integrated structure provided in an embodiment of the present application;

[0021] Figure 2 A longitudinal cross-sectional view of a urea feeding pipe in a urea liquid supply integrated structure provided in an embodiment of the present application;

[0022] Figure 3 A side view of a urea liquid supply integrated structure provided in an embodiment of the present application;

[0023] Figure 4 This is a schematic structural diagram of a sensing unit and a pressure regulating unit in a urea liquid supply integrated structure provided in an embodiment of the present application.

[0024] In the figure: 1. Tank sealing metal plate; 2. Heating channel; 201. Heating pipe; 2011. Heating inlet; 2012. Heating outlet; 3. Urea feeding pipe; 301. Feeding port sealing cover; 4. Urea supply pipe; 401. Urea solution filter; 5. Sensing unit; 501. Support rod; 502. Urea liquid level sensor; 503. Sensor connector; 6. Pressure regulating unit; 601. Inflating pipe; 602. Exhaust pipe. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] The embodiment of the present application provides an integrated urea liquid supply structure, which can solve the technical problems in the prior art that a traditional corrosion-resistant metal urea feeding port is separately opened on a composite material urea tank body, which not only affects the overall integration of the structure, but also has low connection reliability and complex connection process between the urea feeding port and the urea tank body made of different materials.

[0027] Figure 1 A front view of a urea liquid supply integrated structure provided in an embodiment of the present application, Figure 3 A side view of a urea liquid supply integrated structure provided in an embodiment of the present application, as shown Figure 1 、 Figure 3As shown, the urea liquid supply integrated structure in the present application includes a tank body sealing metal disc 1 and an active component. A through hole is provided on the urea tank body, and the tank body sealing metal disc 1 is detachably arranged in the through hole to form a closed space for loading urea with the urea tank. The tank body sealing metal disc 1 is made of corrosion-resistant metal to extend its service life. In one embodiment of the present application, the tank body sealing metal disc 1 is a sealing flange, and the active component is integrated on the tank body sealing metal disc 1, which is mainly used to ensure the normal replenishment and normal supply of urea and other tasks. The overall structure is highly integrated. Under the premise of ensuring the normal circulation of urea, there is no need to open an additional feeding port on the urea tank body, thereby improving the structural integrity and sealing. The connection between the same materials also reduces the manufacturing process flow.

[0028] Specifically, the active component includes a urea channel unit that passes through the tank sealing metal disk 1, and the urea channel unit includes a urea feeding pipe 3 and a urea supply pipe 4. The tank sealing metal disk 1 is also provided with a heating channel 2 for extending into the urea tank, and the heating inlet 2011 and the heating outlet 2012 of the heating channel 2 both extend outward from the top surface of the tank sealing metal disk 1.

[0029] The urea feeding pipe 3 and the urea supply pipe 4 are both made of corrosion-resistant metal to facilitate stable connection with the tank body sealing metal disk 1. When the assembly is completed, the tank body sealing metal disk 1 can be detachably set on the through hole opened in advance on the top of the urea tank body. The connection method here adopts the existing commonly used method. The bottom of the urea feeding pipe 3 passes through the tank body sealing metal disk 1 and enters the urea tank body. The top of the urea feeding pipe 3 is used to connect to the outside world for adding urea solution to the urea tank. The bottom of the urea supply pipe 4 also passes through the tank body sealing metal disk 1 and enters the urea tank body. The top of the urea supply pipe 4 is used to connect to the vehicle SCR system to facilitate uric acid reaction.

[0030] In the embodiment of the present application, the heating channel 2 is connected to the coolant system of the engine. The heating inlet 2011 and the heating outlet 2012 of the heating channel 2 protrude from the top surface of the tank sealing metal disk 1 to connect the pipeline of the coolant system and introduce the coolant of the engine. The pipe body of the heating channel 2 extends to the bottom surface of the tank sealing metal disk 1 and enters the urea tank. The coolant enters the urea tank through the heating channel 2 to utilize the high temperature of the coolant to heat the urea solution in the urea tank to prevent the urea solution from freezing at low temperatures. The coolant then flows out of the heating channel 2 and returns to the cooling system of the engine, completing a cycle.

[0031] The urea liquid supply integrated structure in the present application integrates the urea feeding pipe 3 and the urea supply pipe 4 on the tank sealing metal disk 1, so as to realize the injection of urea solution and the supply of vehicle. There is no need to open an additional feeding port on the urea tank body, thereby achieving a highly integrated structure. At the same time, the urea feeding pipe and the tank sealing metal disk are made of the same material, which avoids the instability factor of the connection between different materials, can effectively improve the connection stability between the two, and reduce the manufacturing process. By arranging the heating inlet 2011 and the heating outlet 2012 protruding from the heating channel 2 on the top surface of the tank sealing metal disk 1, it is convenient to connect to the engine cooling system to prevent the urea solution from solidifying in a low temperature environment.

[0032] Furthermore, one end of the urea feeding pipe 3 extends to the bottom surface of the tank sealing metal disk 1, and the other end protrudes from the top surface of the tank sealing metal disk 1 and extends horizontally. Combined with the above description, each channel in the active component is integrated on the tank sealing metal disk 1, and the area of the tank sealing metal disk 1 is limited. At the same time, for most vehicle models, the urea tank may be placed independently on the side of the frame or next to the fuel tank, and the installation space there is also extremely limited. Therefore, in order to reduce the space occupied by the urea liquid supply integrated structure in the height direction of this application, and to facilitate the driver to perform urea solution filling operations, the urea feeding pipe 3 is an inverted L-shape as a whole, that is, the urea feeding pipe 3 protrudes from one end of the tank sealing metal disk 1 and extends horizontally. When filling the urea solution, the external urea solution container is directly connected to the horizontally extended end of the urea feeding pipe 3.

[0033] Further, Figure 2 This is a longitudinal cross-sectional view of a urea feeding pipe 3 in a urea liquid supply integrated structure provided in an embodiment of the present application, as shown in FIG. Figure 2 As shown, a feeding port sealing cover 301 is provided at one end of the urea feeding pipe 3 protruding from the top surface of the tank sealing metal disk 1. Under normal circumstances, the feeding port sealing cover 301 is detachably connected to the horizontal extension end of the urea feeding pipe 3 to ensure the sealing inside the urea tank body, prevent the urea solution from leaking, avoid pollution to the environment, and ensure that the urea solution is effectively sprayed into the exhaust system. The connection method between the feeding port sealing cover 301 and the urea feeding pipe 3 includes but is not limited to a threaded type, a sleeve type, etc., which can ensure the sealing of the urea tank while being easy to disassemble. The specific connection method is not specifically limited in this application.

[0034] For further information, see Figure 3One end of the urea supply pipe 4 protrudes from the top surface of the tank sealing metal disk 1, and the other end extends to the bottom surface of the tank sealing metal disk 1. The urea supply pipe 4 is used to connect the urea tank and the vehicle SCR system, and then spray out after the reaction of the SCR system. In one embodiment of the present application, the bottom of the urea supply pipe 4 extends to the bottom surface of the tank sealing metal disk 1 to enter the urea tank. The urea supply pipe 4 protrudes from the top end of the tank sealing metal disk 1 and extends horizontally. It is consistent with the shape of the urea feeding pipe 3 and is in an inverted L shape to facilitate connection to the inlet end of the SCR system.

[0035] For further information, see Figure 3 A urea solution filter 401 is provided at one end of the urea supply pipe 4 extending to the bottom surface of the tank sealing metal disk 1. The outflow end of the urea solution filter 401 is connected to the inflow end of the urea supply pipe 4. In actual use, the urea solution filter 401 usually adopts a physical pressure filtration method to intercept insoluble impurity particles larger than the pore size through a fixed pore size. A filter membrane or filter element is provided on the outer periphery of the urea solution filter 401. The urea solution to be filtered is pumped into the urea solution filter 401. Impurities are retained in the filter membrane by the interception effect of the filter membrane or filter element, and the clean urea solution enters the urea supply pipe 4 from the outflow end of the urea solution filter 401 and finally enters the SCR system for reaction.

[0036] As an optional embodiment, a flow sensor is detachably provided at the outflow end of the urea supply pipe 4. The urea solution flowing out of the urea supply pipe 4 first enters the flow sensor for measurement and is then transported to the SCR system by the flow sensor, so as to facilitate accurate control of the outflow of the urea solution.

[0037] For further information, see Figure 3 The heating channel 2 includes a heating tube 201. Combined with the above description, the heating inlet 2011 and the heating outlet 2012 of the heating tube 201 both protrude from the top surface of the tank sealing metal disk 1, and the tube body of the heating tube 201 extends to the bottom surface of the tank sealing metal disk 1. That is, after assembly is completed, the heating tube 201 is U-shaped as a whole, with its open ends passing through the tank sealing metal disk 1 and extending upward for connecting to the vehicle coolant system. The tube body is folded back and located in the urea tank.

[0038] As an optional embodiment, the length of the heating tube 201 is increased, and its folded tube portion is horizontally arranged and laid on the bottom of the urea tank. Through this structure, the contact area and contact time between the urea solution and the heating tube 201 can be increased, thereby improving the heating efficiency. At the same time, the horizontally laid heating tube 201 can also form an arc segment, and the above-mentioned urea solution filter 401 is arranged on the inner side of the arc segment to improve structural integration.

[0039] Further, Figure 4This is a schematic diagram of the structure of the sensing unit 5 and the pressure regulating unit 6 in the urea liquid supply integrated structure provided in an embodiment of the present application, as shown in FIG. Figure 4 As shown, the active component also includes a sensing unit 5, which is mainly used to be electrically connected to the vehicle control system to monitor the current remaining amount of urea solution in the urea tank in real time, so as to facilitate the driver to replenish it in time. Specifically, the sensing unit 5 includes a support rod 501 located on the bottom surface of the tank sealing metal disk 1, and a urea liquid level sensor 502 is provided on the support rod 501. The support rod 501 is arranged longitudinally, and its two ends are respectively fixedly connected to the bottom surface of the tank sealing metal disk 1 and the bottom of the urea tank body. The urea liquid level sensor 502 is arranged on the rod body of the support rod 501. Based on the working mechanism of the urea liquid level sensor 502, the urea liquid level sensor 502 is arranged at the bottom of the rod body of the support rod 501.

[0040] Furthermore, as an optional embodiment, the sensing unit 5 also includes a sensor connector 503 arranged on the top surface of the tank sealing metal disk 1. The sensor connector 503 is mainly used to connect the urea liquid level sensor 502 with the vehicle control system to facilitate the driver to receive urea solution information.

[0041] As an optional embodiment, the sensing unit 5 further includes a urea quality detection device and a urea temperature sensor, both of which are arranged on the support rod 501. At the same time, the connection ports of the urea quality detection device and the urea temperature sensor are integrated into the sensor connector 503 to achieve multi-function and high integration.

[0042] Furthermore, a pressure regulating unit 6 is provided on the tank body sealing metal plate 1. The pressure regulating unit 6 includes an air filling pipe 601 and an exhaust pipe 602 that pass through the tank body sealing metal plate 1. The air filling pipe 601 is mainly used to add air to the urea tank. When urea solution is extracted from the tank, air enters the tank through the air filling pipe 601, maintaining the pressure balance between the inside and outside of the tank and ensuring that the urea solution can flow out smoothly. In addition, in some cases, the urea tank can also be pressurized through the air filling pipe 601 to facilitate the rapid discharge of urea solution or cleaning of the tank body. The exhaust pipe 602 is used to release excess gas in the tank. When the urea tank is filled with urea solution, the air in the tank needs to have an outlet to discharge to avoid the filling process being affected by excessive internal pressure. At the same time, the exhaust pipe 602 can also help remove harmful gases or steam that may be generated in the tank to ensure the safe operation of the system. The air filling pipe 601 and the exhaust pipe 602 are common configurations of the first-use urea tank and will not be described in detail here.

[0043] The urea liquid supply integrated structure in the present application integrates the urea feeding pipe 3 and the urea supply pipe 4 on the tank body sealing metal plate 1, so as to realize the injection of urea solution and the supply of vehicle. There is no need to open an additional feeding port on the urea tank body, thereby achieving a highly integrated structure, improving the sealing performance and manufacturing convenience of the urea tank body, and effectively reducing the manufacturing process. By providing the heating inlet 2011 and the heating outlet 2012 protruding from the heating channel 2 on the top surface of the tank body sealing metal plate 1, it is convenient to connect to the engine cooling system to prevent the urea solution from solidifying in a low temperature environment.

[0044] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0046] The above are merely specific embodiments of the present application to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather is intended to conform to the widest scope consistent with the principles and novel features of the present application.

Claims

1. A urea solution supply integrated structure, characterized in that: include: Tank sealing metal plate (1); An active component comprises a urea channel penetrating the tank body sealing metal disk (1), the urea channel comprising a urea feeding pipe (3) and a urea supply pipe (4), the tank body sealing metal disk (1) further being provided with a heating channel (2) for extending into the urea tank, and a heating inlet (2011) and a heating outlet (2012) of the heating channel (2) both extending outward from the top surface of the tank body sealing metal disk (1).

2. The urea solution supply integrated structure according to claim 1, characterized in that: One end of the urea feeding pipe (3) extends to the bottom surface of the tank body sealing metal disk (1), and the other end protrudes from the top surface of the tank body sealing metal disk (1) and extends horizontally.

3. The urea solution supply integrated structure according to claim 2, characterized in that: One end of the urea feeding pipe (3) protruding from the top surface of the tank sealing metal disk (1) is detachably provided with a feeding port sealing cover (301).

4. The urea solution supply integrated structure according to claim 1, characterized in that: One end of the urea supply pipe (4) protrudes from the top surface of the tank body sealing metal disk (1), and the other end extends to the bottom surface of the tank body sealing metal disk (1).

5. The urea solution supply integrated structure according to claim 4, characterized in that: A urea solution filter (401) is provided at one end of the urea supply pipe (4) extending to the bottom surface of the tank sealing metal disk (1).

6. The urea solution supply integrated structure according to claim 1, characterized in that: The heating channel (2) comprises a heating tube (201), the heating inlet (2011) and the heating outlet (2012) are respectively located at two ends of the heating tube (201), and the tube body of the heating tube (201) passes through the tank sealing metal disk (1) and extends in a direction away from the bottom surface of the tank sealing metal disk (1).

7. The urea solution supply integrated structure according to claim 1, characterized in that: The action component further comprises a sensing unit (5).

8. The urea solution supply integrated structure according to claim 7, characterized in that: The sensing unit (5) comprises a support rod (501) located on the bottom surface of the tank sealing metal disk (1), and a urea liquid level sensor (502) is provided on the support rod (501).

9. The urea solution supply integrated structure according to claim 8, characterized in that: The sensing unit (5) further comprises a sensor connector (503) arranged on the top surface of the tank sealing metal disk (1).

10. The urea solution supply integrated structure according to claim 9, characterized in that: The tank body sealing metal disk (1) is further provided with a pressure regulating unit (6), and the pressure regulating unit (6) comprises an air filling pipe (601) and an air exhaust pipe (602) passing through the tank body sealing metal disk (1).

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