Detachable pipeline structure of urea sensor

Abstract

The utility model is applicable to the technical field of urea sensors, and provides a urea sensor detachable pipeline structure which comprises a main pipe assembly and an auxiliary pipe assembly connected with the main pipe assembly through a connecting assembly, the main pipe assembly comprises a base, the base is of a disc structure, a round base through hole is formed in the axis position of the base in a penetrating mode, and the auxiliary pipe assembly is connected with the main pipe assembly through a connecting assembly. A main pipeline is welded at one end in the through hole of the base, and a connecting assembly is welded at the other end; and the main pipeline comprises a main pipe connector welded with the base through hole and a main pipe passage connected with the main pipe connector. The device solves the problems that the pipe fittings cannot be maintained after being damaged through welding connection and can only be integrally scrapped, and different pipe fittings of urea sensors of the same series cannot be randomly spliced, the pipe fittings are connected through the two-way pipe joint, the pipe fittings can be disassembled and maintained after being damaged, the use cost is reduced, and the service life of the urea sensors is prolonged. And meanwhile, different pipe fittings can be disassembled and assembled, the inventory is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of urea sensors, and more specifically, to a detachable pipeline structure of a urea sensor. Background Art

[0002] The function of the urea sensor in the automotive field is to monitor the temperature of urea in the urea tank. It is integrated with a cooling water heating pipe and is used to heat and defrost the system in cold areas, heat the urea solution, and prevent the system from malfunctioning due to urea crystallization in cold weather and failing to work properly.

[0003] In the existing urea sensor structure, the pipe fittings are mainly installed by welding and pressing. After the pipe fittings are installed in the product, they cannot be removed and replaced. If problems such as poor airtightness occur after assembly, the product cannot be reworked or repaired and can only be scrapped as a whole. This increases the scrap rate of the product and increases the user's cost of use.

[0004] Generally, the difference between the same series of urea sensors is only the length of the pipeline. However, due to the poor interchangeability of the structure of urea sensors, the pipeline cannot be disassembled after assembly. In the actual production process, the same series of products cannot be assembled differently, and the inventory products cannot be handled flexibly. While causing inventory accumulation and waste of raw materials, it also further increases production costs. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a detachable pipeline structure for a urea sensor, which can connect pipes through a two-way pipe joint, and can be disassembled for repair after the pipes are damaged, thereby reducing the cost of use; at the same time, pipes of different lengths can be assembled to avoid inventory accumulation and reduce production costs.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a detachable pipeline structure of a urea sensor, comprising a main pipe assembly and a sub-pipe assembly connected to the main pipe assembly through a connecting assembly, the main pipe assembly comprising a base, the base being arranged in a disc structure, and a circular base through hole being penetrated at the axial position, a main pipe being welded at one end inside the base through hole, and a connecting assembly being welded at the other end; the main pipe comprising a main pipe connector welded to the base through hole and a main pipe passage connected to the main pipe connector, the main pipe passage being arranged in a hollow tubular structure arranged perpendicular to the base, and the main pipe connector being arranged in a hollow cylindrical structure whose inner diameter is consistent with the outer diameter of the main pipe passage and whose outer diameter is consistent with the inner diameter of the base through hole.

[0007] The utility model further illustrates that the connecting assembly includes a two-way pipe joint, which is configured as a hollow cylindrical structure, and one end of which is close to the base is welded to the inside of the through hole of the base, a two-way pipe is arranged inside the two-way pipe joint, and a spherical portion is arranged at one end of the two-way pipe joint close to the auxiliary pipe assembly; and a nut, which is configured as a hollow cylindrical structure with an inner diameter matching the outer diameter of the two-way pipe joint, and the auxiliary pipe assembly is sleeved on one end away from the two-way pipe joint; wherein a group of bushings are arranged between the nut and the auxiliary pipe assembly.

[0008] The utility model further illustrates that the outer wall of the two-way pipe joint close to the nut is provided with a thread, the two-way pipeline is provided as a passage with an inner diameter consistent with the main passage, the spherical portion is provided as a semi-spherical structure, and the angle β is provided between 60°-70°, and the two-way pipeline runs through the spherical portion; the inner wall of the nut is provided with an internal thread, and the internal thread and the thread of the outer wall of the two-way pipe joint are adapted to each other.

[0009] By adopting the above technical solution, the nut can be locked through the cooperation of the internal thread and the thread of the outer wall of the two-way pipe joint, which facilitates the installation and disassembly of the two-way pipe joint and the auxiliary pipe assembly.

[0010] The utility model further describes that the auxiliary pipe assembly includes an auxiliary pipeline, the auxiliary pipeline is configured as a hollow cylindrical structure, and an auxiliary pipe passage is arranged inside the auxiliary pipeline, and an auxiliary pipe connector is arranged at one end of the auxiliary pipeline close to the connecting assembly; wherein, the auxiliary pipe connector is configured as a hollow semicircular structure with a diameter larger than the auxiliary pipeline, and the auxiliary pipe passage is configured as a passage with an inner diameter consistent with that of the two-way pipeline.

[0011] The utility model further describes that the auxiliary pipe connector is sleeved inside the nut and is arranged to be an arc structure adapted to the arc surface of the spherical portion near one end of the two-way pipe joint. The auxiliary pipe connector is connected to the auxiliary pipe passage near one end of the auxiliary pipeline.

[0012] By adopting the above technical solution, the angles of the spherical portion, the arc portion and the auxiliary pipe connector are designed to be between 60° and 75°, so that the bushing fits the auxiliary pipe connector to provide a buffer to prevent wear, while also ensuring that the spherical portion and the auxiliary pipe connector cooperate to form a line seal, with the sealing position being near the middle position of the auxiliary pipe connector.

[0013] The utility model further describes that the bushing includes an arc surface portion arranged near one end of the auxiliary pipe connector and a base portion arranged near one end of the auxiliary pipe, the arc surface portion is arranged as an arc-shaped cylindrical structure recessed inwardly, and the arc surface is adapted to the arc surface of the auxiliary pipe connector; the base portion is arranged as a hollow cylindrical structure, the inner diameter of the base portion is consistent with the outer diameter of the auxiliary pipe, and the outer diameter is adapted to the inner diameter of the nut.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] (1) The two-way pipe joint is welded inside the through hole of the base to connect with the main pipe; the secondary pipe is sleeved inside the nut and locked by the thread between the nut and the two-way pipe joint, thereby realizing the connection between the secondary pipe and the two-way pipe joint. Compared with the welding connection, the two-way pipe joint connection allows the secondary pipe to be disassembled;

[0016] (2) The angles of the spherical portion, the arc portion, and the auxiliary pipe connector are designed to be between 60° and 75°, which ensures that the bushing fits the auxiliary pipe connector and that the sealing position of the spherical portion and the auxiliary pipe connector is near the middle of the auxiliary pipe connector;

[0017] (3) When the auxiliary pipe assembly is damaged, the auxiliary pipe assembly and the two-way pipe joint can be disassembled and separated by loosening the nut, which is convenient for subsequent repair and replacement, reducing the cost of use; auxiliary pipe assemblies of different lengths can also be assembled as needed, reducing inventory backlogs and effectively reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 The utility model is a schematic diagram of the structure of the detachable pipeline structure of the urea sensor.

[0020] Figure 2 It is a partial enlarged view of the connecting component in the utility model.

[0021] Figure 3 For along Figure 1 Cross-section view along the AA direction.

[0022] Figure 4 for Figure 3 Schematic diagram of the structure.

[0023] Figure 5 for Figure 4 Schematic diagram of the explosion structure.

[0024] Figure 6 for Figure 4 A partial enlarged view of the D area in the middle.

[0025] In the figure: 1. main pipe assembly; 11. base; 111. base through hole; 12. main pipe; 121. main pipe passage; 122. main pipe connector; 2. connector assembly; 21. two-way pipe joint; 211. two-way pipe; 212. spherical portion; 22. nut; 221. internal thread; 23. bushing; 231. arc portion; 232. base; 3. auxiliary pipe assembly; 31. auxiliary pipe; 32. auxiliary pipe passage; 33. auxiliary pipe connector. DETAILED DESCRIPTION

[0026] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-3 The utility model provides a technical solution: a detachable pipeline structure of a urea sensor, see Figure 1 , comprising a main pipe assembly 1, a connecting assembly 2 and a secondary pipe assembly 3. The connecting assembly 2 is welded to the main pipe assembly 1 as a whole, and the secondary pipe assembly 3 is rotatably mounted on the connecting assembly 2.

[0028] See also Figure 1 , Figure 4 and Figure 5 The main pipe assembly 1 includes a base 11, a base through hole 111, a main pipe 12, a main pipe passage 121 and a main pipe connector 122. The base 11 is set as a disc structure, and a circular base through hole 111 is set through the axial position. The main pipe 12 is welded at one end of the base through hole 111, and the connecting assembly 2 is welded at the other end. The base through hole 111 connects the main pipe 12 and the connecting assembly 2, and also provides a welding environment for the two.

[0029] See also Figure 1 , Figure 4 and Figure 5 The main pipeline 12 includes a main pipe connector 122 welded to the base through hole 111 and a main pipe passage 121 connected to the main pipe connector 122. The main pipe passage 121 is set as a hollow tubular structure set vertically to the base 11, and the main pipe passage 121 is downwardly connected to the inside of the connection component 2. The main pipe connector 122 is set as a hollow cylindrical structure whose inner diameter is consistent with the outer diameter of the main pipe passage 121 and whose outer diameter is consistent with the inner diameter of the base through hole 111. The main pipe connector 122 is welded inside the base through hole 111 to ensure the reliability of the connection between the main pipeline 12 and the base 11.

[0030] See also Figure 1-3 and Figure 5-6The connection assembly 2 includes a two-way pipe joint 21, a two-way pipeline 211, a spherical portion 212, a nut 22, an internal thread 221, a bushing 23, an arc portion 231 and a base 232. The two-way pipe joint 21 is configured as a hollow cylindrical structure, and one end thereof close to the base 11 is welded inside the base through hole 111, thereby ensuring the reliability of the connection between the two-way pipe joint 21 and the main pipe assembly 1. A two-way pipeline 211 is provided inside the two-way pipe joint 21, and the two-way pipeline 211 is configured as a passage with an inner diameter consistent with the main pipe passage 121, thereby ensuring the consistency of the internal passage of the pipe fitting. The outer wall of the two-way pipe joint 21 close to the nut 22 is provided with a thread, which can be locked in cooperation with the nut 22.

[0031] See also Figure 1-3 and Figure 5-6 The two-way pipe joint 21 is provided with a spherical portion 212 at one end near the auxiliary pipe assembly 3. The spherical portion 212 is set to a semi-spherical structure, and the angle β is set between 60°-70°. The two-way pipe 211 runs through the spherical portion 212. On the one hand, the spherical portion can fit with the auxiliary pipe assembly 3 to ensure good air tightness inside the structure; on the other hand, it can also ensure that the two-way pipe 211 can be connected to the main pipe 121 and the auxiliary pipe 32 respectively, ensuring that the internal passage of the pipe is connected. When used for different series of urea sensors, the diameter of the spherical portion 212 can be adjusted according to the size of the pipe.

[0032] See also Figure 1-3 and Figure 5 The nut 22 is configured as a hollow cylindrical structure whose inner diameter matches the outer diameter of the two-way pipe joint 21, and a sub-tube assembly 3 is sleeved on one end away from the two-way pipe joint 21. An internal thread 221 is arranged around the inner wall of the nut 22, and the internal thread 221 and the thread of the outer wall of the two-way pipe joint 21 are mutually adapted. The sub-tube assembly 3 is sleeved inside the nut 22, and the sub-tube assembly 3 can be connected and locked with the two-way pipe joint 21 through the cooperation of the internal thread 221 and the thread of the outer wall of the two-way pipe joint 21, so as to ensure good air tightness of the internal structure. At the same time, when the sub-tube assembly 3 is damaged, the sub-tube assembly 3 can be disassembled by loosening the nut 22, which is convenient for subsequent repair or replacement, thereby reducing the cost of use.

[0033] See also Figure 1-3 and Figure 5-6A group of bushings 23 are arranged between the nut 22 and the auxiliary pipe assembly 3, and the bushings 23 are set to be flexible materials. The bushing 23 includes an arc surface 231 arranged near one end of the auxiliary pipe connector 33 and a base 232 arranged near one end of the auxiliary pipe 31. The arc surface 231 is set to be an arc cylindrical structure that is concave inward, and the arc surface is adapted to the arc surface of the auxiliary pipe connector 33. The angle of the arc surface 231 is designed to be between 60° and 75°, which fully ensures that the bushing 23 fits tightly with the auxiliary pipe assembly 3. The base 232 is set to be a hollow cylindrical structure, and the base 232 is sleeved on the outside of the auxiliary pipe 31. The inner diameter of the base 232 is consistent with the outer diameter of the auxiliary pipe 31, and the outer diameter is adapted to the inner diameter of the nut 22. The bushing 23 can buffer between the nut 22 and the auxiliary pipe assembly 3 to prevent the nut 22 and the auxiliary pipe assembly 3 from wearing.

[0034] See also Figure 1 , Figure 2 and Figure 5 The auxiliary pipe assembly 3 includes an auxiliary pipe 31, an auxiliary pipe passage 32 and an auxiliary pipe connector 33. The auxiliary pipe 31 is set as a hollow cylindrical structure, and the auxiliary pipe passage 32 is set inside. The auxiliary pipe passage 32 is set as a passage with an inner diameter consistent with the two-way pipe 211, and the main passage 121, the two-way pipe 211 and the auxiliary pipe passage 32 are connected to each other to form a complete pipeline passage.

[0035] See also Figure 1 , Figure 2 and Figure 5-6 A secondary pipe connector 33 is provided at one end of the secondary pipe 31 near the connecting assembly 2, and the secondary pipe connector 33 is set as a hollow semicircular structure with a diameter larger than the secondary pipe 31. The secondary pipe connector 33 is connected to the secondary pipe passage 32 near one end of the secondary pipe 31 to ensure that the internal passage of the pipe is connected. The secondary pipe connector 33 is sleeved inside the nut 22, and is set to an arc structure that is adapted to the arc surface of the spherical portion 212 near one end of the two-way pipe joint 21. The angle of the secondary pipe connector 33 is designed to be between 60° and 75°, ensuring that the spherical portion 212 and the secondary pipe connector 33 cooperate to form a line seal, and the sealing position is near the middle position of the secondary pipe connector 33.

[0036] The working principle of the detachable pipeline structure of a urea sensor provided by the utility model is as follows:

[0037] See also Figure 1-6, the main pipe 12 and the two-way pipe joint 21 are welded inside the base through hole 111, so that the main pipe assembly 1 and the two-way pipe joint 21 are connected as a whole. When the auxiliary pipe assembly 3 needs to be assembled, the auxiliary pipe 31 is sleeved inside the nut 22, and a bushing 23 is set between the auxiliary pipe 31 and the nut 22 to prevent wear. Then, the nut 22 is locked by adapting the internal thread 221 of the inner wall of the nut 22 with the thread of the outer wall of the two-way pipe joint 21, so as to achieve the connection as a whole. When the auxiliary pipe assembly 3 needs to be assembled, the auxiliary pipe and the auxiliary pipe assembly 3 are connected to complete the assembly.

[0038] After the sub-pipe assembly 3 is assembled, the arc surface of the sub-pipe connector 33 at the top of the sub-pipe 31 fits with the spherical portion 212 of the two-way pipe joint 21. The angles of the sub-pipe connector 33 and the spherical portion 212 are designed to be between 60° and 75°, ensuring that the spherical portion 212 and the sub-pipe connector 33 cooperate to form a line seal, and the sealing position is near the middle position of the sub-pipe connector 33.

[0039] When the auxiliary pipe assembly 3 is damaged, the auxiliary pipe assembly 3 and the two-way pipe joint 21 can be disassembled and separated by simply loosening the nut 22, which is convenient for subsequent repair and replacement. Compared with overall scrapping, the use cost is effectively reduced.

[0040] At the same time, the auxiliary pipe components 3 of the same series with different lengths can be assembled according to the needs, which can reduce the inventory backlog and effectively reduce the production cost.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A detachable pipeline structure of a urea sensor, characterized in that: The invention comprises a main pipe component (1) and a secondary pipe component (3) connected to the main pipe component (1) via a connecting component (2), wherein the main pipe component (1) comprises: A base (11), the base (11) being arranged in a disc structure and having a circular base through hole (111) penetrating the axial position, a main pipeline (12) being welded at one end inside the base through hole (111) and a connecting assembly (2) being welded at the other end; The main pipeline (12) comprises a main pipe connector (122) welded to the base through hole (111) and a main pipe passage (121) connected to the main pipe connector (122); the main pipe passage (121) is configured as a hollow tubular structure perpendicular to the base (11); the main pipe connector (122) is configured as a hollow cylindrical structure whose inner diameter is consistent with the outer diameter of the main pipe passage (121) and whose outer diameter is consistent with the inner diameter of the base through hole (111).

2. The detachable pipeline structure of a urea sensor according to claim 1, characterized in that: The connection component (2) comprises: A two-way pipe joint (21), the two-way pipe joint (21) being configured as a hollow cylindrical structure, and having one end close to the base (11) welded to the inside of the base through hole (111), a two-way pipe (211) penetrating the inside of the two-way pipe joint (21), and a spherical portion (212) being provided at one end of the two-way pipe joint (21) close to the auxiliary pipe assembly (3); and, A nut (22), wherein the nut (22) is configured as a hollow cylindrical structure whose inner diameter matches the outer diameter of the two-way pipe joint (21), and the auxiliary pipe assembly (3) is sleeved on one end away from the two-way pipe joint (21); Wherein, a group of bushings (23) is arranged between the nut (22) and the auxiliary pipe assembly (3).

3. The detachable pipeline structure of a urea sensor according to claim 2, characterized in that: The outer wall of the two-way pipe joint (21) close to the nut (22) is provided with threads, the two-way pipe (211) is provided as a passage having an inner diameter consistent with that of the main passage (121), the spherical portion (212) is provided as a semi-spherical structure, and the angle β is provided between 60° and 70°, and the two-way pipe (211) is provided through the spherical portion (212); An internal thread (221) is arranged around the inner wall of the nut (22), and the internal thread (221) is adapted to the thread on the outer wall of the two-way pipe joint (21).

4. The detachable pipeline structure of a urea sensor according to claim 3 is characterized in that: The secondary pipe assembly (3) comprises: A secondary pipe (31), the secondary pipe (31) being arranged as a hollow cylindrical structure, and having a secondary pipe passage (32) penetrating therein, and a secondary pipe connector (33) being arranged at one end of the secondary pipe (31) close to the connecting assembly (2); The auxiliary pipe connector (33) is configured as a hollow semicircular structure having a diameter greater than that of the auxiliary pipe (31), and the auxiliary pipe passage (32) is configured as a passage having an inner diameter consistent with that of the two-way pipe (211).

5. The detachable pipeline structure of a urea sensor according to claim 4, characterized in that: The auxiliary pipe connector (33) is sleeved inside the nut (22) and is arranged to be an arc-shaped structure adapted to the arc surface of the spherical portion (212) at an end close to one end of the two-way pipe joint (21). The auxiliary pipe connector (33) is connected to the auxiliary pipe passage (32) at an end close to the auxiliary pipe (31).

6. The detachable pipeline structure of a urea sensor according to claim 5, characterized in that: The bushing (23) comprises a curved surface portion (231) arranged near one end of the auxiliary pipe connector (33) and a base portion (232) arranged near one end of the auxiliary pipe (31); the curved surface portion (231) is arranged as an inwardly concave curved cylindrical structure, and the curved surface is adapted to the curved surface of the auxiliary pipe connector (33); The base (232) is configured as a hollow cylindrical structure, the inner diameter of the base (232) is consistent with the outer diameter of the auxiliary pipe (31), and the outer diameter is adapted to the inner diameter of the nut (22).

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