Non-metal urea tank

Abstract

The utility model provides a nonmetal urea tank, relates to the technical field of automobile urea tanks, and adopts the technical scheme that the nonmetal urea tank comprises a tank body, a valve seat is arranged at the side end part of the tank body, a connecting pipe is mounted on the valve seat, the connecting pipe is positioned in the tank body, the connecting pipe is bent upwards, and the upper end part of the connecting pipe is close to the top of the tank body; a first sensor is arranged at the upper end of the connecting pipe. The utility model has the beneficial effects that the connecting pipe is arranged and integrated on the valve seat, so that the damage to the tank body caused by the installation on the tank body is avoided, the connecting pipe is bent to be close to the top of the tank body, and the first sensor is arranged at the upper end part of the connecting pipe; the position of the first sensor can be higher than the liquid level in the tank body, in addition, a wire can penetrate through the connecting pipe to be connected with the first sensor, and normal work of the first sensor is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive urea tank technology, and in particular to a non-metallic urea tank. Background Technology

[0002] The urea tank system is part of the automotive aftertreatment system. During operation, a urea pump supplies urea to the aftertreatment system, which reacts with NOx (nitrogen oxides) in the exhaust gas, reducing NOx emissions. Currently, urea tanks used in automobiles are either vertically or horizontally arranged. In automotive design, for applications with ample space and large capacity requirements, vertically arranged urea tanks are typically chosen. This arrangement effectively utilizes vertical space, ensuring sufficient urea storage. For vehicles with limited space, horizontally arranged urea tanks are preferred, allowing for greater flexibility within confined space while still meeting basic urea storage needs.

[0003] For horizontally arranged urea tanks, to avoid damage to the urea tank sensor due to immersion in liquid, the sensor is usually positioned high up in the tank, closer to the top. For example, patent document CN218117882U discloses a horizontally arranged cylindrical urea tank where the sensor is mounted directly on the tank body above the valve seat. For metal tanks, this method allows for direct welding of the sensor to the tank body, achieving seamless integration. However, the situation is more complex when dealing with non-metallic tanks. Whether the sensor is pre-embedded during the tank manufacturing stage or installed by drilling and welding after the tank is formed, it is difficult to directly install the sensor on the tank body without compromising its original performance. Utility Model Content

[0004] The purpose of this invention is to address the problem that it is difficult to directly install sensors on existing horizontally arranged non-metallic urea tanks without damaging the tank's performance. This invention proposes and designs a non-metallic urea tank that allows sensors to function normally without direct installation on the tank and without being submerged in liquid.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a non-metallic urea tank, including a tank body, a valve seat provided at the side end of the tank body, a connecting pipe installed on the valve seat, the connecting pipe being located inside the tank body, the connecting pipe being bent upwards and the upper end of the connecting pipe being close to the top of the tank body, and a first sensor being provided at the upper end of the connecting pipe. This solution avoids damage to the tank body by providing a connecting pipe integrated into the valve seat, and the bending of the connecting pipe brings its height close to the top of the tank body. The installation of the first sensor at the upper end of the connecting pipe ensures that the position of the first sensor is higher than the liquid level in the tank. Furthermore, a wire can be threaded through the connecting pipe to connect to the first sensor, ensuring the normal operation of the first sensor. In addition, the connecting pipe also has a venting function when urea is added to the tank.

[0006] Furthermore, the connecting pipe includes an inward extension section and an upward extension section. One end of the inward extension section is connected to the valve seat, and the other end is connected to the upward extension section. By setting the inward extension section, there is a horizontal depth into the tank body. On the one hand, this ensures the distance between the first sensor and the valve seat, allowing the first sensor to be close to the middle of the tank body's length. On the other hand, because the size of the bottle opening at the side end of the tank body is limited, when installing the valve seat, the angle can be adjusted to allow the upward extension section to enter the tank body first, and then the inward extension section to enter the tank body. This facilitates the adjustment of the connecting pipe and its insertion into the tank body.

[0007] Furthermore, the first sensor is a temperature sensor, used to monitor the temperature inside the tank.

[0008] Furthermore, a liquid level sensor is installed in the upward extension section to monitor the liquid level in the tank.

[0009] Furthermore, the inward extension slopes downwards, and the end connecting to the upward extension is close to the bottom of the tank. This allows the level sensor to be installed closer to the bottom of the tank, expanding the monitoring range of the liquid level in the tank and obtaining more accurate level data.

[0010] Furthermore, a pressure sensor is installed on the upward extension section to monitor the pressure inside the tank.

[0011] Furthermore, a heating coil is installed on the valve seat, located inside the tank. The heating coil is angled, with one end away from the valve seat and close to the bottom of the tank. This allows for heating of the liquid at the bottom of the tank, even when the liquid level is low, thus expanding the heating range.

[0012] Furthermore, the inward extension section passes through the heating coil. The components are more closely spaced, resulting in higher integration, saving space, and facilitating valve seat installation at the bottle neck.

[0013] Furthermore, the valve seat is equipped with an injection port and a compressed air interface, and a urea output pipe is installed on the valve seat. The urea output pipe is located inside the tank and is arranged at an angle with one end away from the valve seat close to the bottom of the tank to facilitate urea discharge.

[0014] Furthermore, the valve seat is provided with a cooling water inlet and a cooling water outlet for injecting and discharging cooling water.

[0015] Furthermore, the upper end of the connecting pipe is equipped with a splash-proof structure. When the vehicle is in motion, urea may be splashed into the upper opening of the connecting pipe, potentially affecting the sensor and clogging the pipe. The splash-proof structure effectively prevents these problems. The splash-proof structure is umbrella-shaped or inverted U-shaped.

[0016] As can be seen from the above technical solutions, this utility model has the following advantages:

[0017] This solution provides a non-metallic urea tank. By installing a connecting pipe integrated into the valve seat, damage to the tank body is avoided. The connecting pipe is bent to bring its height close to the top of the tank body. Temperature and pressure sensors are installed at the upper end of the connecting pipe, positioning them above the liquid level in the tank. Wires can also be run through the connecting pipe to electrically connect with the temperature and pressure sensors, ensuring their normal operation. Furthermore, the connecting pipe also has a venting function when urea is added to the tank. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of embodiment 1 of the present invention.

[0020] Figure 2 This is an isometric structural diagram of specific embodiment 1 of the present utility model.

[0021] Figure 3 and Figure 4 This is a structural schematic diagram of specific embodiment 2 of the present utility model.

[0022] In the diagram, 1 is the tank body, 2 is the valve seat, 3 is the connecting pipe, 31 is the upward extension section, 32 is the inward extension section, 4 is the first sensor, 5 is the heating coil, 6 is the sensor interface, 7 is the liquid injection port, 8 is the urea output pipe, and 9 is the anti-splash structure. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. Detailed Implementation Method 1

[0025] like Figure 1 and Figure 2 As shown in the figure, this specific embodiment provides a non-metallic urea tank, including a tank body 1. A valve seat 2 is provided at the side end of the tank body 1, and a connecting pipe 3 is installed on the valve seat 2. The connecting pipe 3 is located inside the tank body 1, and the connecting pipe 3 is bent upward with its upper end close to the top of the tank body 1. A first sensor 4 is provided at the upper end of the connecting pipe 3. The first sensor 4 is a temperature sensor used to monitor the temperature in the tank body 1.

[0026] The connecting pipe 3 includes an inwardly extending section 32 and an upwardly extending section 31. One end of the inwardly extending section 32 is connected to the valve seat 2, and the other end is connected to the upwardly extending section 31. By setting the inwardly extending section 32, there is a horizontal depth into the tank 1. This ensures the distance between the first sensor 4 and the valve seat 2, allowing the first sensor 4 to be close to the middle of the tank 1's length. Furthermore, because the size of the bottle opening at the side end of the tank 1 is limited, when installing the valve seat 2, the angle can be adjusted to allow the upwardly extending section 31 to enter the tank 1 first, followed by the inwardly extending section 32, facilitating the adjustment of the connecting pipe 3 and its insertion into the tank 1. The upwardly extending section 31 is equipped with a liquid level sensor for monitoring the liquid level in the tank 1. The inwardly extending section 32 is inclined downwards, and the end connected to the upwardly extending section 31 is close to the bottom of the tank 1. This allows the liquid level sensor to be installed closer to the bottom of the tank 1, increasing the monitoring range of the liquid level in the tank 1 and obtaining more accurate liquid level data. Furthermore, a pressure sensor is installed on the upper part of the upward extension section 31 to monitor the pressure inside the tank 1.

[0027] The valve seat 2 is equipped with a heating coil 5, which is located inside the tank body 1. The heating coil 5 is inclined, with one end away from the valve seat 2 close to the bottom of the tank body 1, to heat the liquid at the bottom of the tank body 1. This allows heating even when the liquid level is low, thus expanding the heating range. The inward extension section 32 passes through the heating coil 5, making the components more compact, increasing the integration, saving space, and facilitating the installation of the valve seat 2 at the bottle opening.

[0028] In addition, the valve seat 2 is provided with a liquid injection port 7 and a compressed air interface. A urea output pipe 8 is installed on the valve seat 2. The urea output pipe 8 is located inside the tank body 1. The urea output pipe 8 is arranged at an angle, with one end away from the valve seat 2 close to the bottom of the tank body 1 to facilitate urea discharge. In order to facilitate the injection and discharge of cooling water, a cooling water inlet and a cooling water outlet are provided on the valve seat 2. Detailed Implementation Method 2

[0030] When the vehicle is in motion, urea may splash and enter the upper end of the connecting pipe, potentially affecting the sensor and clogging the pipe. To effectively prevent this problem, this specific embodiment is an improvement upon embodiment 1, such as... Figure 3 and Figure 4 As shown, the improvement is that the upper end of the connecting pipe 3 is provided with a splash-proof structure 9. The splash-proof structure 9 is a cap provided at the upper end of the connecting pipe 3 or the upper end of the connecting pipe 3 is inverted U-shaped. The cap can be umbrella-shaped or barrel-shaped.

[0031] The terms “upper,” “lower,” “outer,” “inner,” etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the present invention is not 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

1. A non-metallic urea tank comprising a tank body, a valve seat being provided at a side end portion of the tank body, characterized in that, A connecting pipe is installed on the valve seat, the connecting pipe is located inside the tank body, the connecting pipe is bent upward and the upper end of the connecting pipe is close to the top of the tank body, the upper end of the connecting pipe is provided with a first sensor; The connecting pipe comprises an inward extending section and an upward extending section, one end of the inward extending section is connected with the valve seat, the other end of the inward extending section is connected with the upward extending section; The inward extending section is inclined downward and the end connected with the upward extending section is close to the bottom of the tank body.

2. The non-metallic urea tank of claim 1, wherein, The first sensor is a temperature sensor.

3. The non-metallic urea tank of claim 1, wherein, The upward extending section is provided with a liquid level sensor.

4. The non-metallic urea tank of claim 2, wherein, The upward extending section is installed with a pressure sensor.

5. The non-metallic urea tank of claim 1, wherein, A heating coil is installed on the valve seat, the heating coil is located inside the tank body, the heating coil is inclined arranged and the end away from the valve seat is close to the bottom of the tank body.

6. The non-metallic urea tank of claim 5, wherein, The inward extending section passes through the heating coil.

7. A non-metallic urea tank according to any one of claims 1-6, characterized in that A liquid injection port and a compressed air interface are arranged on the valve seat, a urea output pipe is installed on the valve seat, the urea output pipe is located inside the tank body, the urea output pipe is inclined arranged and the end away from the valve seat is close to the bottom of the tank body.

8. A non-metallic urea tank as claimed in any of claims 1 to 6, characterized in that The upper end of the connecting pipe is provided with a splash-proof structure, the splash-proof structure is a cap arranged on the upper end of the connecting pipe or the upper end of the connecting pipe is in inverted U shape.

Images