Nitrogen filling tool and nitrogen filling device

Abstract

The application provides a nitrogen charging tool and a nitrogen charging device, which are used for charging nitrogen into a pipeline. The nitrogen charging tool comprises a tool main body, and the tool main body comprises: a nitrogen charging nozzle, which is inserted into the pipeline; a connecting cover, which is arranged around the nitrogen charging nozzle; and a containing cavity, which is arranged between the connecting cover and the nitrogen charging nozzle, and in which the pipeline is inserted. The nitrogen charging tool and the nitrogen charging device solve the technical problem that the nitrogen charging tool cannot be used universally when different pipe diameters of the pipeline are charged with nitrogen in the related art.

Description

Technical Field

[0001] This invention relates to the field of air conditioner pipe welding fixture technology, specifically to a nitrogen filling fixture and nitrogen filling device. Background Technology

[0002] In the existing technology, nitrogen purging is required during the welding process of condenser and evaporator components to prevent the pipes from reacting with oxygen in the air during heating, forming oxide scale inside the system, causing dirt blockage in the air conditioning pipe system, and making the air conditioner unable to operate.

[0003] The existing condenser and evaporator assemblies mainly use two common pipe diameters for their piping. Various nitrogen-filling fixtures of different sizes have been manufactured for the pipe interfaces of these two diameters. However, in actual production, there are instances of mixed use of nitrogen-filling fixtures and employees randomly handling fixtures. This frequently leads to mismatches between the nitrogen-filling nozzles of the fixtures and the pipe interfaces, resulting in significant nitrogen loss. This prevents sufficient nitrogen from being obtained during the welding process, affecting the quality of nitrogen filling and welding. Consequently, the air conditioning piping system becomes clogged, and refrigerant frosts at the clogged areas, impacting the air conditioning's cooling and heating efficiency and leading to an increase in after-sales complaints.

[0004] Therefore, existing technologies need further development. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a nitrogen filling tool and a nitrogen filling device to solve the technical problem that nitrogen filling tools are not universally applicable when filling pipelines of different diameters in related technologies.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: a nitrogen filling fixture is provided for filling a pipeline with nitrogen. The nitrogen filling fixture includes a fixture body, which includes: a nitrogen filling nozzle inserted into the pipeline; a connecting cover surrounding the nitrogen filling nozzle; and a receiving cavity disposed between the connecting cover and the nitrogen filling nozzle, wherein a pipeline is inserted into the receiving cavity.

[0007] Furthermore, the nitrogen filling fixture includes a nitrogen filling connection surface, which is perpendicular to the extension direction of the receiving cavity. The nitrogen filling connection surface is located between the nitrogen filling nozzle and the connecting cover, and the nitrogen filling connection surface abuts against the pipeline.

[0008] Furthermore, the nitrogen filling fixture includes a nitrogen filling delivery pipeline connected to a nitrogen filling nozzle; the nitrogen filling delivery pipeline includes: a first nitrogen filling delivery pipeline connected to a nitrogen filling nozzle; and a second nitrogen filling delivery pipeline connected to the first nitrogen filling delivery pipeline, the extension direction of the second nitrogen filling delivery pipeline being perpendicular to the first nitrogen filling delivery pipeline.

[0009] A nitrogen filling device includes a nitrogen filling fixture, which is the nitrogen filling fixture described above.

[0010] Furthermore, the nitrogen filling device includes a flow divider, which includes an air inlet and at least two flow dividers. The air inlet is inserted into the receiving cavity and connected to the nitrogen filling nozzle. The air inlet abuts against the nitrogen filling connection surface, and the at least two flow dividers are respectively inserted into the pipeline.

[0011] Furthermore, the diversion component includes a connecting pipe, one end of which is connected to the air inlet, and the other end of which is connected to at least two diversion ports; the connecting pipe includes: a first branch, which is connected to the air inlet; a second branch, which extends in the same direction as the pipeline, one end of which is connected to the first branch, and the other end of which is connected to the pipeline; a preset angle is provided between the first branch and the second branch.

[0012] Furthermore, the nitrogen filling fixture includes a connecting groove, which includes: a clearance space through which a connecting pipe passes; a first plate surface that abuts against a first branch; a second plate surface and a third plate surface that are spaced apart and connected to the second plate surface and the third plate surface; the first plate surface, the second plate surface and the third plate surface are arranged around the clearance space.

[0013] Furthermore, the first plate surface is curved.

[0014] Furthermore, at least two diversion ports include a first diversion port and a second diversion port, and the connecting pipe includes a first connecting pipe and a second connecting pipe. The first diversion port is connected to the first connecting pipe, and the second diversion port is connected to the second connecting pipe. The connecting groove includes a first connecting groove and a second connecting groove arranged opposite to each other. The first connecting groove is through which the first connecting pipe passes, and the second connecting groove is through which the second connecting pipe passes.

[0015] Furthermore, the connecting cover includes a positioning surface located on the outer wall of the connecting cover, and the positioning surface is spaced apart from the first connecting groove and the second connecting groove.

[0016] Beneficial effects:

[0017] 1. By setting the main body of the tooling, when the nitrogen filling nozzle is inserted into the pipeline to fill the pipeline with nitrogen, the pipeline is inserted into the receiving cavity between the connecting cover and the nitrogen filling nozzle, so that the nitrogen filling nozzle is smaller than the diameter of the pipeline. Therefore, the nitrogen filling tooling in this embodiment can be used for pipelines with different diameters. There is no need to change the tooling when filling with nitrogen. At the same time, the connecting cover and the receiving cavity can support the nitrogen filling nozzle and prevent nitrogen from escaping from the pipeline, thus ensuring the quality of nitrogen filling and welding. The nitrogen filling tooling in this embodiment is convenient for employees to operate, improves employee work efficiency, and solves the technical problem in related technologies that nitrogen filling tooling cannot be used universally when filling pipelines with different diameters.

[0018] 2. By setting up a diversion component, the nitrogen filling device in this embodiment can simultaneously fill multiple pipelines with nitrogen, thereby improving the nitrogen filling efficiency; by abutting the air inlet against the nitrogen filling connection surface, nitrogen loss can be prevented.

[0019] 3. By setting a connecting groove, when the air inlet is inserted into the receiving cavity, due to the structural design of the connecting pipe, in order to make the nitrogen filling tool and the flow distribution component more stably connected, a connecting groove is set on the nitrogen filling tool, so that the first plate surface abuts against the first branch, thereby making the connection between the nitrogen filling tool and the flow distribution component more stable, ensuring that the air inlet is always in contact with the nitrogen filling connection surface during the nitrogen filling process, and preventing nitrogen loss. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the nitrogen-filling fixture used in an embodiment of the present invention;

[0021] Figure 2 This is a side view of the nitrogen-filling fixture used in an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 AA section view in the middle;

[0023] Figure 4 This is a bottom view of the nitrogen-filling fixture used in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the nitrogen filling device used in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the flow divider component of the nitrogen filling device used in an embodiment of the present invention.

[0026] The above figures include the following reference numerals:

[0027] 1. Piping;

[0028] 100. Tooling body; 10. Nitrogen filling nozzle; 20. Connecting cover; 21. Positioning surface; 30. Receiving cavity; 31. Nitrogen filling connection surface; 40. Nitrogen filling delivery pipeline; 41. First nitrogen filling delivery pipeline; 42. Second nitrogen filling delivery pipeline; 200. Diverting component; 210. Air inlet; 220. Diverting port; 221. First diverting port; 222. Second diverting port; 230. Connecting pipe; 231. First connecting pipe; 232. Second connecting pipe; 2301. First branch; 2302. Second branch; 50. Connecting groove; 51. First connecting groove; 52. Second connecting groove; 501. Clearance space; 502. First plate surface; 503. Second plate surface; 504. Third plate surface. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] According to an embodiment of the present invention, a nitrogen-filling fixture is provided; please refer to [link / reference]. Figures 1 to 6 It is used to fill nitrogen into pipeline 1. The nitrogen filling tool includes a tool body 100, which includes: a nitrogen filling nozzle 10, which is inserted into pipeline 1; a connecting cover 20, which surrounds the nitrogen filling nozzle 10; and a receiving cavity 30, which is disposed between the connecting cover 20 and the nitrogen filling nozzle 10, and the pipeline 1 is inserted into the receiving cavity 30. By setting the fixture body 100, when the nitrogen filling nozzle 10 is inserted into the pipeline 1 to fill the pipeline 1 with nitrogen, the pipeline 1 is inserted into the receiving cavity 30 between the connecting cover 20 and the nitrogen filling nozzle 10, so that the nitrogen filling nozzle 10 is smaller than the diameter of the pipeline 1. Therefore, the nitrogen filling fixture in this embodiment can be used for pipelines 1 with different diameters. There is no need to change the fixture when filling with nitrogen. At the same time, the connecting cover 20 and the receiving cavity 30 can support the nitrogen filling nozzle 10 and prevent nitrogen from escaping from the pipeline 1, thus ensuring the quality of nitrogen filling and welding. The nitrogen filling fixture in this embodiment is convenient for employees to operate, improves employee work efficiency, and solves the technical problem in related technologies that nitrogen filling fixtures cannot be used interchangeably when filling pipelines with different diameters.

[0031] In the nitrogen-filling fixture of this embodiment, see Figure 1 The nitrogen purging fixture includes a nitrogen purging connection surface 31, which is perpendicular to the extension direction of the receiving cavity 30. The nitrogen purging connection surface 31 is disposed between the nitrogen purging nozzle 10 and the connecting cover 20, and abuts against the pipeline 1. By abutting against the pipeline 1 with the nitrogen purging connection surface 31, nitrogen gas can be prevented from escaping during nitrogen purging, thus avoiding welding quality problems caused by insufficient nitrogen purging.

[0032] In the nitrogen-filling fixture of this embodiment, see Figure 1The nitrogen filling fixture includes a nitrogen delivery pipeline 40, which is connected to a nitrogen filling nozzle 10. The nitrogen delivery pipeline 40 includes a first nitrogen delivery pipeline 41, which is connected to the nitrogen filling nozzle; and a second nitrogen delivery pipeline 42, which is connected to the first nitrogen delivery pipeline 41, with the extension direction of the second nitrogen delivery pipeline 42 perpendicular to the first nitrogen delivery pipeline 41. Through this configuration, nitrogen gas enters the nitrogen filling fixture via the first nitrogen delivery pipeline 41 and the second nitrogen delivery pipeline 42. The first nitrogen delivery pipeline 41 and the second nitrogen delivery pipeline 42 are perpendicular to each other, facilitating manual or robotic operation or handling of the nitrogen filling fixture.

[0033] In the nitrogen filling device of this embodiment, see Figure 1 This includes a nitrogen-filling fixture, which is the nitrogen-filling fixture described above.

[0034] In the nitrogen filling device of this embodiment, see Figure 5 The nitrogen filling device includes a flow divider 200, which includes an air inlet 210 and at least two flow dividers 220. The air inlet 210 is inserted into the receiving cavity 30 and connected to the nitrogen filling nozzle 10. The air inlet 210 abuts against the nitrogen filling connection surface 31. The at least two flow dividers 220 are respectively inserted into the pipeline 1. By setting the flow divider 200, the nitrogen filling device in this embodiment can simultaneously fill multiple pipelines 1 with nitrogen, thereby improving the nitrogen filling efficiency; the abutment between the air inlet 210 and the nitrogen filling connection surface 31 can prevent nitrogen loss.

[0035] In the nitrogen filling device of this embodiment, see Figure 6 The diversion component 200 includes a connecting pipe 230, one end of which is connected to the air inlet 210, and the other end of which is connected to at least two diversion ports 220. The connecting pipe 230 includes: a first branch 2301 connected to the air inlet 210; and a second branch 2302 extending in the same direction as the pipe 1, one end of which is connected to the first branch 2301, and the other end of which is connected to the pipe 1. A preset angle is provided between the first branch 2301 and the second branch 2302. By setting the first branch 2301 and the second branch 2302, the direction of the connecting pipe 230 can be adjusted, allowing nitrogen gas in the connecting pipe 230 to be connected to multiple pipes 1 through the first branch 2301 and the second branch 2302.

[0036] In the nitrogen filling device of this embodiment, see Figure 3The nitrogen filling fixture includes a connecting groove 50, which includes: a clearance space 501 through which a connecting pipe 230 passes; a first plate surface 502 that abuts against the first branch 2301; a second plate surface 503 and a third plate surface 504 that are spaced apart and connected to the first plate surface 502; and the first plate surface 502, the second plate surface 503 and the third plate surface 504 surrounding the clearance space 501. Thus, when the air inlet 210 is inserted into the receiving cavity 30, due to the structural design of the connecting pipe 230, in order to make the nitrogen filling fixture and the flow distribution component 200 more stably connected, a connecting groove 50 is provided on the nitrogen filling fixture, so that the first plate surface 502 abuts against the first branch 2301, thereby making the connection between the nitrogen filling fixture and the flow distribution component 200 more stable, ensuring that the air inlet 210 always abuts against the nitrogen filling connection surface 31 during the nitrogen filling process, and preventing nitrogen loss.

[0037] In the nitrogen filling device of this embodiment, see Figure 3 The first plate surface 502 is arc-shaped. In this way, by setting the first plate surface 502 to be arc-shaped, the shape of the first plate surface 502 can be more closely matched with that of the first branch 2301, thereby making the nitrogen filling tool and the flow divider 200 more stably connected.

[0038] In the nitrogen filling device of this embodiment, see Figure 5 At least two diversion ports 220 include a first diversion port 221 and a second diversion port 222; a connecting pipe 230 includes a first connecting pipe 231 and a second connecting pipe 232, with the first diversion port 221 connected to the first connecting pipe 231 and the second diversion port 222 connected to the second connecting pipe 232; a connecting groove 50 includes a first connecting groove 51 and a second connecting groove 52 arranged opposite to each other, with the first connecting groove 51 through which the first connecting pipe 231 passes, and the second connecting groove 52 through which the second connecting pipe 232 passes. Preferably, the nitrogen filling fixture includes two connecting grooves 50 arranged opposite to each other, and the diversion component 200 is correspondingly provided with two diversion ports 220 and two connecting pipes 230.

[0039] Multiple connection slots 50 can be set according to actual needs, as well as multiple diversion ports 220 and multiple connection pipes 230.

[0040] In the nitrogen filling device of this embodiment, see Figure 4The connecting cover 20 includes a positioning surface 21, which is located on the outer wall of the connecting cover 20. The positioning surface 21 is spaced apart from the first connecting groove 51 and the second connecting groove 52. By providing the positioning surface 21 on the outer wall of the connecting cover 20, and by spaced apart from the first connecting groove 51 and the second connecting groove 52, and by making the planes containing the positioning surface 21 and the first connecting groove 51 and the second connecting groove 52 parallel to each other, it is convenient for manual or automated equipment to directly identify the usage direction of the nitrogen filling fixture from the outer wall of the connecting cover 20, thereby reducing the loading time of the nitrogen filling fixture and increasing the convenience of nitrogen filling.

[0041] Specifically, by setting the nitrogen filling device in this embodiment, multiple pipelines can be filled with nitrogen at the same time. When it is necessary to fill a single pipeline with nitrogen, only the nitrogen filling tool needs to be connected to the pipeline. When it is necessary to fill multiple pipelines with nitrogen at the same time, the nitrogen filling device can be selected to be connected to multiple pipelines.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application 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; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0044] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0045] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0046] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A nitrogen-filling device, characterized in that, Includes a nitrogen purging fixture for purging nitrogen into pipeline (1), the nitrogen purging fixture including a fixture body (100), the fixture body (100) including: A nitrogen filling nozzle (10) is inserted into the pipeline (1); A connecting cover (20) is provided around the nitrogen filling nozzle (10); A receiving cavity (30) is disposed between the connecting cover (20) and the nitrogen filling nozzle (10), and the pipeline (1) is inserted into the receiving cavity (30). The nitrogen filling device includes a flow divider (200), which includes an air inlet (210) and at least two flow dividers (220). The air inlet (210) is inserted into the receiving cavity (30), and the air inlet (210) is connected to the nitrogen filling nozzle (10). The air inlet (210) abuts against the nitrogen filling connection surface (31), and at least two flow dividers (220) are respectively inserted into the pipeline (1). The flow divider (200) includes a connecting pipe (230), one end of which is connected to the air inlet (210), and the other end of which is connected to at least two flow dividers (220). The connecting pipe (230) includes at least two. The nitrogen filling fixture includes a connecting groove (50), and the connecting groove (50) includes at least two, each of which is respectively provided in a one-to-one correspondence with at least two connecting pipes (230). The connecting groove (50) includes: A clearance space (501) through which the connecting pipe (230) passes; At least two of the said diversion ports (220) include a first diversion port (221) and a second diversion port (222), and the connecting pipe (230) includes a first connecting pipe (231) and a second connecting pipe (232), wherein the first diversion port (221) is connected to the first connecting pipe (231), and the second diversion port (222) is connected to the second connecting pipe (232); The connecting groove (50) includes a first connecting groove (51) and a second connecting groove (52) disposed opposite to each other. The first connecting groove (51) is provided with a first connecting pipe (231), and the second connecting groove (52) is provided with a second connecting pipe (232). The connecting cover (20) includes a positioning surface (21), which is located on the outer wall of the connecting cover (20). The positioning surface (21) is spaced apart from the first connecting groove (51) and the second connecting groove (52).

2. The nitrogen charging device according to claim 1, characterized in that, The nitrogen filling fixture includes a nitrogen filling connection surface (31), which is perpendicular to the extension direction of the receiving cavity (30). The nitrogen filling connection surface (31) is disposed between the nitrogen filling nozzle (10) and the connecting cover (20), and the nitrogen filling connection surface (31) abuts against the pipeline (1).

3. The nitrogen charging device according to claim 1, characterized in that, The nitrogen filling fixture includes a nitrogen filling pipeline (40), which is connected to the nitrogen filling nozzle (10); The nitrogen-filled delivery pipeline (40) includes: The first nitrogen-filling delivery pipeline (41) is connected to the nitrogen-filling nozzle; The second nitrogen-filling pipeline (42) is connected to the first nitrogen-filling pipeline (41), and the extension direction of the second nitrogen-filling pipeline (42) is perpendicular to the first nitrogen-filling pipeline (41).

4. The nitrogen charging device according to claim 1, characterized in that, The connecting pipe (230) includes: The first branch (2301) is connected to the air inlet (210); The second branch (2302) extends in the same direction as the pipeline (1), and one end of the second branch (2302) is connected to the first branch (2301). A preset angle is provided between the first branch (2301) and the second branch (2302).

5. The nitrogen charging device according to claim 4, characterized in that, The connecting groove (50) includes: The first plate surface (502) abuts against the first branch road (2301); The second plate (503) and the third plate (504) are arranged at intervals, and the first plate (502) is connected between the second plate (503) and the third plate (504). The first plate surface (502), the second plate surface (503) and the third plate surface (504) are arranged around the clearance space (501).

6. The nitrogen charging device according to claim 5, characterized in that, The first plate surface (502) is arc-shaped.

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