Joint connecting structure of pipeline flange, vehicle thermal management system and vehicle

Abstract

The utility model discloses a pipeline flange joint connecting structure, a vehicle thermal management system and a vehicle, the joint connecting structure comprises a runner plate, a flange joint and a connecting part, the end part of one side of the runner plate is a first connecting end part, at least one runner opening is arranged on the runner plate, and the flange joint is connected with the connecting part; each runner opening penetrates through the runner plate in the thickness direction of the runner plate, and a limiting groove is formed in the end, close to the first connecting end, of each runner opening. The end of the side, close to the runner plate, of the flange connector is a second connecting end, the flange connector is also provided with at least one channel opening penetrating in the thickness direction, the side, located at the second connecting end, of each channel opening is further provided with a limiting boss matched with the corresponding limiting groove, and the limiting bosses protrude out of the end face where the second connecting end is located. The connecting part is arranged between the flange connector and the runner plate, the two side parts of the connecting part are tightly attached to the first connecting end part and the second connecting end part respectively, and the structure has the advantages of being stable in connecting structure, high in connecting strength and high in connecting quality.

Description

Technical Field

[0001] The utility model relates to the technical field related to connecting pipelines, and in particular to a joint connection structure of a pipeline flange. Background Art

[0002] As a commonly used pipeline connection component, pipeline flanges are widely used in the connection between pipeline structures. Among them, air-conditioning flanges are one of the pipeline flanges. Air-conditioning flanges are generally set on the refrigerant interface on the refrigerant side flow plate. The refrigerant interface on the refrigerant side flow plate is connected to the air-conditioning pipeline through the air-conditioning flange. In the vehicle air-conditioning system, the refrigerant pressure in the high-pressure area is very high, and the flow plate is required to have a strong pressure-bearing capacity. Therefore, the flow plate manufacturing process is generally forging or die-casting, and the material is generally aluminum alloy. However, due to layout requirements, some air-conditioning pipe flange joints cannot be integrally formed with the flow plate and need to be brazed to the flow plate later.

[0003] At present, direct brazing is generally used for welding the flow plate and the air conditioning pipe flange joint. The welding surfaces between the flow plate and the solder ring, and between the solder ring and the air conditioning pipe flange joint are two parallel planes. This welding structure will cause the solder to overflow after melting due to heat, and the solder will climb to the sealing surface of the air conditioning pipe flange joint, affecting the roughness of the sealing surface, thereby causing refrigerant leakage. In addition, due to the lack of limiters, this welding structure will also cause the air conditioning pipe flange joint to deviate easily during assembly, so that the air conditioning pipe flange joint and the refrigerant flow channel opening of the flow plate are not concentric after welding, increasing the refrigerant flow resistance, and in severe cases, it will cause the air conditioning pipe to be unable to be assembled. Therefore, how to design a reasonable welding structure to prevent the solder from climbing to the sealing surface of the air conditioning pipe flange joint and facilitate the assembly of the air conditioning pipe flange joint has become a problem that needs to be solved urgently.

[0004] In the prior art, a Chinese patent with publication number CN217804229U was retrieved, which discloses a flow channel plate, a thermal management integrated module, a refrigerant circulation circuit and a vehicle, and discloses a solution for welding the flow channel plate and outlets of different heat exchangers in different implementation schemes, but does not disclose how to solve the problems of solder climbing to the sealing surface of the flange joint during brazing and poor installation accuracy and easy eccentricity. For example, a Chinese patent with publication number CN220285862U discloses a countercurrent vehicle burner device and a thermal management system, and discloses a solution for sealing through a flange and welding the flange to the cylinder body, but also does not disclose how to solve the problems of easy solder climbing to the flange sealing surface and easy eccentricity during welding.

[0005] Therefore, in the prior art, when welding the flow channel plate and the pipeline flange joint, there are problems that the solder melts due to heat and creeps onto the sealing surface of the pipeline flange joint, and the pipeline flange joint and the refrigerant flow channel opening of the flow channel plate are easily eccentric during welding. Utility Model Content

[0006] The utility model aims to solve the problems in the prior art that when welding the flow channel plate and the pipeline flange joint, the solder melts due to heat and creeps onto the sealing surface of the pipeline flange joint, and the pipeline flange joint and the refrigerant flow channel opening of the flow channel plate are easily eccentric during welding.

[0007] In order to solve the above technical problems, an embodiment of the utility model discloses a joint connection structure of a pipeline flange, including a flow channel plate, a flange joint and a connecting part.

[0008] One side end of the flow channel plate is a first connecting end, and at least one flow channel opening is arranged on the flow channel plate. Each flow channel opening penetrates the flow channel plate along the thickness direction of the flow channel plate, and a limiting groove is arranged at the end close to the first connecting end.

[0009] The end of the flange joint close to the flow channel plate is the second connection end, and the flange joint is also provided with at least one channel opening penetrating along the thickness direction. Each channel opening is located on one side of the second connection end and is also provided with a limiting boss adapted to the limiting groove, and the limiting boss protrudes from the end face where the second connection end is located.

[0010] The connecting portion is arranged between the flange joint and the flow channel plate, and two sides of the connecting portion are respectively tightly fitted with the first connecting end portion and the second connecting end portion.

[0011] By adopting the above technical scheme, in the joint connection structure of the pipeline flange disclosed in the present application, the flow channel plate and the flange joint are matched and connected and then welded, the connecting part is arranged between the flow channel plate and the flange joint, and a limiting groove is arranged at the position of the flow channel opening of the flow channel plate, and a limiting boss is arranged on the corresponding channel opening of the flange joint, and the limiting groove and the limiting boss are snap-fitted during matching, at which time the limiting groove and the limiting boss play a guiding alignment and limiting role, so that the flow channel opening and the channel opening are aligned and connected, and during the welding and hot melting process of the connecting part, the limiting groove and the limiting boss will form a blocking structure to block the hot-melted solder from crawling into the flow channel opening and the channel opening, preventing the sealing surface of the flange joint from being damaged, and during the welding process, the limiting groove and the limiting boss can ensure that the flow channel opening and the channel opening are always aligned and concentrically connected. Therefore, the joint connection structure of the pipeline flange has the advantages of a stable connection structure, high connection strength, and high connection quality.

[0012] The embodiment of the utility model further discloses a joint connection structure of a pipeline flange, wherein the end surface where the first connection end is located is a plane, and a plurality of reinforcing rib installation grooves are arranged at intervals on the first connection end and around the flow channel opening.

[0013] The end surface where the second connecting end is located is a plane, and a plurality of reinforcing ribs adapted to the plurality of reinforcing rib connecting grooves are arranged at intervals on the second connecting end and around the passage opening.

[0014] The connection portion includes a plurality of protrusions adapted to the plurality of reinforcing rib installation grooves, the protrusions protrude toward one side of the first connection end portion and can be adapted to the reinforcing rib installation grooves, and a recess for accommodating the reinforcing ribs is provided on one side of the protrusions toward the second connection end portion. When the flange joint and the flow channel plate are aligned and connected, each reinforcing rib installation groove, the protrusions and the reinforcing ribs are correspondingly nested and adapted in sequence.

[0015] By adopting the above technical solution, the first connecting end and the second connecting end are both planes, and a plurality of mutually matching reinforcing rib installation grooves, protrusions and reinforcing ribs are further provided, which can increase the length and area of ​​the welding surface and enhance the strength of the welding joint.

[0016] The embodiment of the utility model also discloses a joint connection structure of a pipeline flange, wherein the length dimension of the limiting boss protruding from the end face where the second connection end is located is equal to the sum of the depression depth dimension of the limiting groove and the thickness dimension of the connection part. With such a structure, when the flow channel plate, the flange joint and the connection part are matched together, the first connection end of the flow channel plate and the second connection end of the flange joint are respectively tightly fitted with the connection part, and after hot-melt welding, the flow channel plate and the flange joint can also be ensured to be tightly fitted together.

[0017] The embodiment of the utility model also discloses a joint connection structure of a pipeline flange, a first step portion is formed between the inner wall surface of each flow channel opening and the bottom of the limiting groove, and a second step portion adapted to the first step portion is formed between the outer wall surface of each channel opening and the end surface of the limiting boss.

[0018] By adopting the above technical solution, after the flow channel plate and the flange joint are matched and connected together and the connecting part is welded and hot-melted, the first step portion and the second step portion can form a blocking structure. Therefore, when the solder wants to enter the flow channel opening and the flange joint after being hot-melted, it must climb over the first step portion and the second step portion. The first step portion and the second step portion actually block the path of the solder climbing to the sealing surface in the flange joint, thereby avoiding the problem of the solder climbing to the sealing surface in the flange joint.

[0019] Further preferably, the flow channel plate is provided with two flow channel openings at intervals, wherein each flow channel opening is provided with a limiting groove. Also, the flange joint is provided with two channel openings at intervals, wherein each channel opening is provided with a limiting boss adapted to the limiting groove.

[0020] More preferably, the flange joint, the flow channel plate and the middle portion of the connecting portion are all provided with through fixing bolt holes.

[0021] More preferably, the flow channel opening and the channel opening are both circular, have the same inner diameter, and when the flange joint and the flow channel plate are aligned and connected, the flow channel opening and the channel opening are interconnected and are concentric circles.

[0022] The embodiment of the utility model also discloses a joint connection structure of a pipeline flange, wherein the connection portion is formed by welding a solder ring clamped between the flange joint and the flow channel plate, wherein the outer contour of the solder ring coincides with the outer peripheral contour of the flange joint, and a through hole adapted to the limiting boss is provided; wherein the flange joint and the flow channel plate are made of aluminum alloy material, and the solder ring is made of aluminum alloy solder.

[0023] By adopting the above technical solution, the outer contour of the solder ring coincides with the outer peripheral contour of the flange joint, which can provide more solder after hot melting and make the flow channel plate and the flange joint have a larger welding connection surface. The solder ring is made of aluminum alloy solder, which is more conducive to hot melt welding.

[0024] An embodiment of the utility model also discloses a vehicle thermal management system, including a joint connection structure of a pipe flange of any of the above items, and also including a refrigerant flow pipe and an air-conditioning pipe, wherein the refrigerant flow pipe is connected to the flow port on the flow plate, and the air-conditioning pipe is connected to the channel port on the flange joint.

[0025] An embodiment of the utility model further discloses a vehicle, including a vehicle body and any one of the above-mentioned vehicle thermal management systems.

[0026] In summary, the utility model discloses a joint connection structure of a pipeline flange, a vehicle thermal management system including the same, and a vehicle. In the joint connection structure of the pipeline flange, the flow channel plate and the flange joint are matched and connected and then welded. The connecting part is arranged between the flow channel plate and the flange joint. Hot melting provides solder during welding. A limiting groove is arranged at the position of the flow channel opening of the flow channel plate, and a limiting boss is arranged on the channel opening of the corresponding flange joint. When matching, the limiting groove and the limiting boss are snap-fitted and adapted. At this time, the limiting groove and the limiting boss play a guiding, alignment and limiting role, so that the flow channel opening and the channel opening are aligned and connected. During welding and hot melting of the connecting part, the limiting groove and the limiting boss will form a blocking structure to block the hot-melted solder from crawling into the flow channel opening and the channel opening, thereby preventing the sealing surface of the flange joint from being damaged. In addition, during the welding process, the limiting groove and the limiting boss can ensure that the flow channel opening and the channel opening are always aligned and concentrically connected.

[0027] In addition, a plurality of mutually adapted reinforcing rib installation grooves, protrusions and reinforcing ribs are provided, which can further increase the length and area of ​​the welding surface and strengthen the strength of the welding joint. Therefore, the joint connection structure of the pipeline flange has the advantages of stable connection structure, high connection strength and high connection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 An exploded schematic diagram of a joint connection structure of a pipeline flange provided in an embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the structure of a flow channel plate in a joint connection structure of a pipeline flange provided in an embodiment of the utility model;

[0030] Figure 3 A schematic diagram of one side structure of a pipeline flange in a joint connection structure of a pipeline flange provided in an embodiment of the utility model;

[0031] Figure 4 A schematic diagram of the structure of the other side of the pipeline flange in the joint connection structure of the pipeline flange provided in an embodiment of the utility model;

[0032] Figure 5 A schematic diagram of the structure of one side of the connecting portion of the joint connection structure of the pipeline flange provided in an embodiment of the utility model;

[0033] Figure 6 A schematic diagram of the structure of the other side of the connecting portion of the joint connection structure of the pipeline flange provided in an embodiment of the utility model;

[0034] Figure 7 A cross-sectional view of the joint connection structure of the pipeline flange provided in an embodiment of the utility model when paired together.

[0035] Description of reference numerals:

[0036] 100, runner plate;

[0037] 110. A first connecting end;

[0038] 120, reinforcement rib installation groove;

[0039] 130, flow channel;

[0040] 140, limiting groove;

[0041] 141, first step;

[0042] 200, flange joint;

[0043] 210, second connecting end;

[0044] 211, reinforcement;

[0045] 220, passageway;

[0046] 221, sealing surface;

[0047] 230, limiting boss;

[0048] 231, second step portion;

[0049] 240, fixing bolt hole;

[0050] 300, connecting part;

[0051] 310, protrusion; 320, recess; 330, through hole. DETAILED DESCRIPTION

[0052] The present application has mentioned in the background technology that in the vehicle air-conditioning system, the refrigerant pressure in the high-pressure zone is very high, so the flow plate is required to have a strong pressure-bearing capacity. The common material of the flow plate is aluminum alloy, and the pipe flange needs to be welded to the flow plate later due to the joint layout requirements. During the normal welding process, the solder ring between the flange joint and the flow plate will overflow after being melted by heat, and the solder will climb to the joint sealing surface of the air-conditioning pipe flange, affecting the roughness of the sealing surface, thereby causing refrigerant leakage, and because the welding surface lacks a limit, the flow plate and the flange joint may be welded during welding. The pipe flange joint may deviate, causing the flange joint and the pipe of the flow channel plate to be eccentric, increasing the refrigerant flow resistance, and in severe cases, making it impossible to assemble the air-conditioning pipe. The present application proposes a pipe flange joint connection structure, which solves the problem that the solder will climb to the joint sealing surface of the air-conditioning pipe flange and the flange joint and the flow channel plate are prone to deviation during welding. The pipe flange joint connection structure disclosed in the present application is not limited to use in the flange connection structure of vehicle air conditioners, but can also be applied to other connection structures related to flange joints, such as central air conditioners, indoor air conditioners, boiler pipes, etc.

[0053] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0054] Example 1

[0055] The implementation method of this embodiment discloses a pipe flange joint connection structure. First, see Figure 1 The pipeline flange joint connection structure includes a flow channel plate 100, a flange joint 200 and a connecting portion 300. Figure 1 Shown is a schematic diagram of the exploded structure of the joint connection structure of the pipeline flange.

[0056] First, the specific structure of the flow channel plate 100 is described. Figure 1 and Figure 2, one end of the flow channel plate 100 is the first connection end 110, and at least one flow channel opening 130 is provided on the flow channel plate 100, each flow channel opening 130 penetrates the flow channel plate 100 along the thickness direction of the flow channel plate 100, and a limiting groove 140 is provided at the end close to the first connection end 110. In this embodiment, the side of the flow channel plate 100 used for contacting the flange joint 200 and the connecting part 300 is the first connection end 110, and the drawings of this embodiment illustrate a structure in which two flow channel openings 130 are provided on the flow channel plate 100, and those skilled in the art can set 1, 2, 3 or even more flow channel openings 130 according to actual needs, and the flow channel openings 130 and the limiting grooves 140 are both circular.

[0057] Next, the specific structure of the flange joint 200 is described. Figure 1 and Figure 3 , the end of the flange joint 200 close to the flow channel plate 100 is the second connection end 210, and the flange joint 200 is also provided with at least one channel opening 220 penetrating along the thickness direction, and each channel opening 220 is located on one side of the second connection end 210 and is also provided with a limiting boss 230 adapted to the limiting groove 140, and the limiting boss 230 protrudes from the end face where the second connection end 210 is located. Similarly, the side of the flange joint 200 used for contacting the flow channel plate 100 and the connecting part 300 is the second connection end 210, and the channel opening 220 and the flow channel opening 130 are adapted to each other, and the limiting boss 230 protrudes from the second connection end 210 and is adapted to be snap-fitted with the limiting groove 140. This embodiment also illustrates a structure in which two channel openings 220 are provided on the flange joint 200. Those skilled in the art may set 1, 2, 3 or even more channel openings 220 according to actual needs, and refer to Figure 4 The inner wall surface of the channel opening 220 of the flange joint 200, the inner wall surface away from the limiting boss 230 is a sealing surface 221, and the sealing surface 221 is used to connect other pipelines.

[0058] Next, the specific structure of the connecting portion 300 is described. Figure 1 and Figure 5 The connection part 300 is arranged between the flange joint 200 and the flow channel plate 100, and the two sides of the connection part 300 are respectively tightly fitted with the first connection end 110 and the second connection end 210. It should be noted that the connection part 300 can be set according to the needs. For example, when the flange joint 200 and the flow channel plate 100 need to be welded, the connection part 300 can be set as a solder ring. When the flange joint 200 and the flow channel plate 100 need to be bonded with hot melt super glue, the connection part 300 can be set as a super glue hot melt ring, and its two sides are adaptively connected with the end faces of the flange joint 200 and the flow channel plate 100. Its specific material and specific structure can be selected and set according to actual needs.

[0059] Taking the example of the connection part 300 being set as a strong glue hot melt ring, the connection part 300 is made of solid strong glue and is in the form of a thin sheet. During bonding, the strong glue hot melt ring is heated and melted, and then the flow channel plate 100 and the flange joint 200 are strongly bonded together. Taking the example of the connection part 300 being set as a solder ring, the connection part 300 is stamped by solder, and the solder can be aluminum or other alloy solders. The solder ring is in the form of a thin sheet. During welding, the solder ring is heated and melted, and then the flow channel plate 100 and the flange joint 200 are welded together.

[0060] Next, take the brazing method of the flow channel plate 100 and the flange joint 200 as an example, see Figure 1 and Figure 7 , the matching connection structure of the flow channel plate 100, the flange joint 200 and the connection part 300 before welding and the connection structure and state after welding are described:

[0061] First, before welding the pair, refer to Figure 1 The flow channel plate 100, the flange joint 200 and the connecting portion 300 are all independent components. When paired, the connecting portion 300 needs to be placed between the flow channel plate 100 and the flange joint 200. The first connecting end 110 of the flow channel plate 100 and the second connecting end 210 of the flange joint 200 are arranged opposite to each other. The two sides of the connecting portion 300 are tightly fitted with the first connecting end 110 and the second connecting end 210, respectively. Figure 7 At this time, the limiting groove 140 and the limiting boss 230 are nested and adapted to each other, the channel opening 220 and the flow channel opening 130 are correspondingly adapted and internally communicated. During the brazing process, the connecting portion 300 composed of the solder ring is melted by heat and acts as a welding agent to weld the flow channel plate 100 and the flange joint 200 together, and during the welding process, because the limiting groove 140 and the limiting boss 230 are nested and adapted to each other, no misalignment or slippage will occur, and the channel opening 220 and the flow channel opening 130 are always aligned and paired. More importantly, the limiting groove 140 and the limiting boss 230 are nested with each other to form a blocking structure, which can effectively block the hot-melted solder from crawling into the flow channel opening 130 and the channel opening 220, especially preventing the hot-melted solder from crawling into the sealing surface 221 of the flange joint 200, thereby facilitating subsequent connection and use.

[0062] It should be further explained that those skilled in the art should understand that the flow channel plate 100 may also be other connecting plates, pipe joints, flanges, etc. with similar pipe joints, and the flange joint 200 may also be other connecting plates, pipe joints, flanges, etc. with similar pipe joints. All solutions that have limiting grooves and limiting boss structures at the pipe joints to prevent solder from creeping should be within the scope of protection of this application.

[0063] Therefore, the above technical solution is adopted, in the joint connection structure of the pipeline flange disclosed in the present application, the flow channel plate 100 and the flange joint 200 are matched and connected and then welded, the connecting portion 300 is arranged between the flow channel plate 100 and the flange joint 200, and the flow channel opening 130 of the flow channel plate 100 is provided with a limiting groove 140, and the channel opening 220 of the corresponding flange joint 200 is provided with a limiting boss 230, and the limiting groove 140 and the limiting boss 230 are snap-fitted and adapted when matched, at this time, the limiting groove 140 and the limiting boss 230 are snap-fitted and adapted. The positioning boss 230 plays a role in guiding alignment and limiting, so that the flow channel opening 130 and the channel opening 220 are aligned and connected. During the welding and hot melting process of the connecting part 300, the limiting groove 140 and the limiting boss 230 will form a blocking structure to prevent the solder after hot melting from crawling into the flow channel opening 130 and the channel opening 220, preventing the sealing surface 221 of the flange joint 200 from being damaged, and during the welding process, the limiting groove 140 and the limiting boss 230 can ensure that the flow channel opening 130 and the channel opening 220 are always aligned and concentrically connected. Therefore, the joint connection structure of the pipeline flange has the advantages of a stable connection structure, high connection strength, and high connection quality.

[0064] Furthermore, the implementation of this embodiment also discloses a pipe flange joint connection structure, see Figure 1 as well as Figure 2 The end surface where the first connecting end portion 110 is located is a plane, and a plurality of reinforcing rib installation grooves 120 are arranged at intervals on the first connecting end portion 110 and around the flow channel opening 130. Figure 3 The end surface where the second connecting end portion 210 is located is a plane, and a plurality of reinforcing ribs 211 adapted to the plurality of reinforcing rib installation grooves 120 are arranged at intervals on the second connecting end portion 210 and around the passage opening 220 .

[0065] The connection portion 300 includes a plurality of protrusions 310 adapted to the plurality of reinforcing rib installation grooves 120, the protrusions 310 protrude toward one side of the first connection end portion 110 and can be adapted to the reinforcing rib installation grooves 120, and a recess 320 for accommodating the reinforcing rib 211 is provided on the side of the protrusion 310 facing the second connection end portion 210. When the flange joint 200 and the flow channel plate 100 are aligned and connected, each reinforcing rib installation groove 120, the protrusion 310 and the reinforcing rib 211 are nested and adapted in sequence.

[0066] Specifically, in this embodiment, the plurality of reinforcing ribs 211 on the second connecting end portion 210 are in a strip shape, and the plurality of strip-shaped reinforcing ribs 211 are arranged at equal intervals, and see Figure 3When the middle of the flow channel plate 100 and the flange joint 200 is provided with a fixing bolt hole 240, a plurality of reinforcing ribs 211 are provided in a manner surrounding the fixing bolt hole 240, and do not affect the normal use of the fixing bolt hole 240. It can be understood by those skilled in the art that the specific setting structure and number of the reinforcing ribs 211 can be adjusted and designed according to actual needs. Through the mutually nested and adapted reinforcing rib installation grooves 120, protrusions 310 and reinforcing ribs 211, the structure can be stably clamped when paired and connected. During the welding process, after the solder is hot-melted, the reinforcing ribs 211 and the reinforcing rib installation grooves 120 are stably welded together, which increases the welding contact surface and increases the connection and welding strength through this groove-type connection structure. In summary, the arrangement of a plurality of mutually adapted reinforcing rib installation grooves 120, protrusions 310 and reinforcing ribs 211 can further increase the length and area of ​​the welding surface and strengthen the strength of the welding joint.

[0067] The embodiment of the utility model also discloses a pipe flange joint connection structure, in which the length dimension of the limiting boss 230 protruding from the end face where the second connection end 210 is located is equal to the sum of the depression depth dimension of the limiting groove 140 and the thickness dimension of the connection part 300. With such a structure, when the flow channel plate 100, the flange joint 200 and the connection part 300 are matched together, the first connection end 110 of the flow channel plate 100 and the second connection end 210 of the flange joint 200 are respectively tightly fitted with the connection part 300, and after hot-melt welding, the flow channel plate 100 and the flange joint 200 can also be ensured to be tightly fitted together.

[0068] For example, the length dimension of the limiting boss 230 protruding from the end face where the second connecting end 210 is located is 8 mm, the recessed depth dimension of the limiting groove 140 is 6 mm, the thickness dimension of the connecting part 300 is 2 mm, or technicians in this field can set it to other dimensions, and this embodiment does not make specific limitations on this.

[0069] For further information, see Figure 2 A first step portion 141 is formed between the inner wall surface of each flow channel opening 130 and the bottom of the limiting groove 140, and a second step portion 231 adapted to the first step portion 141 is formed between the outer wall surface of each channel opening 220 and the end surface of the limiting boss 230. Figure 4When looking toward the flange joint 200 from the side of the flange joint 200 away from the second connection end 210, the inner wall surface of the channel opening 220 away from the limiting boss 230 is a sealing surface 221, and the sealing surface 221 is used for subsequent connection or sealing of other pipelines. When the flow channel plate 100 and the flange joint 200 are matched and connected together and the connecting part 300 is welded and hot-melted, the limiting groove 140 and the limiting boss 230 are snap-fitted and adapted, and the first step portion 141 and the second step portion 231 can form a blocking structure, so that the solder that wants to enter the flow channel after hot melting cannot be blocked. When the solder is inside the passage 130 and the flange joint 200, it is necessary to climb over the first step portion 141 and the second step portion 231. The first step portion 141 and the second step portion 231 actually block the path for the solder to climb to the sealing surface 221 in the flange joint 200, thereby avoiding the problem of the solder climbing to the sealing surface 221 in the flange joint 200, ensuring that the flange joint 200 can subsequently be stably connected to the pipeline, and the sealing end face has good sealing performance, and there will be no problem of refrigerant leakage caused by increased roughness of the sealing surface 221.

[0070] More preferably, see Figure 2 The flow channel plate 100 is provided with two flow channel openings 130 at intervals, wherein each flow channel opening 130 is provided with a limiting groove 140. In addition, the flange joint 200 is provided with two channel openings 220 at intervals, wherein each channel opening 220 is provided with a limiting boss 230 adapted to the limiting groove 140.

[0071] More preferably, see Figure 1 and Figure 6 , Figure 7 The flange joint 200, the flow channel plate 100 and the middle position of the connecting portion 300 are all provided with a through fixing bolt hole 240. The fixing bolt hole 240 is provided for subsequent installation of the joint connection structure of the pipeline flange, such as installation on other structures, and can also further fix and connect the flange joint 200 and the flow channel plate 100.

[0072] More preferably, see Figure 1 The flow channel opening 130 and the channel opening 220 are both circular, and have the same inner diameter. Moreover, when the flange joint 200 and the flow channel plate 100 are aligned and connected, the flow channel opening 130 and the channel opening 220 are interconnected and are concentric circles.

[0073] It should be noted that the same inner diameters of the flow channel opening 130 and the channel opening 220 refer to the same inner diameters of the ends where the flow channel opening 130 and the channel opening 220 are connected. When the same inner diameters of the ends where the flow channel opening 130 and the channel opening 220 are connected, the resistance and pressure are minimized when the condensate, coolant or other fluid passes through, and the service life of the pipe joint is extended. The inner diameters of the flow channel opening 130 and the channel opening 220 away from the connection port can be adjusted according to actual needs.

[0074] The implementation of this embodiment also discloses a pipe flange joint connection structure, wherein the connection portion 300 is formed by welding a solder ring clamped between the flange joint 200 and the flow channel plate 100, wherein the outer contour of the solder ring coincides with the outer peripheral contour of the flange joint 200, and a through hole 330 adapted to the limiting boss 230 is provided; wherein the flange joint 200 and the flow channel plate 100 are made of aluminum alloy. The solder ring is made of aluminum alloy solder.

[0075] Next, the structure of the solder ring is explained. The solder ring can be formed by stamping. The shape of the solder ring is compatible with the flange joint 200 and the flow channel plate 100, and the outer contour of the solder ring coincides with the outer peripheral contour of the flange joint 200. After hot melting, more solder can be provided and a larger welding connection surface is provided between the flow channel plate 100 and the flange joint 200. The solder ring is made of aluminum alloy solder, which is more conducive to hot melt welding.

[0076] Furthermore, the materials of the flange joint 200 and the flow channel plate 100 include but are not limited to 6 series aluminum, 3 series aluminum and other aluminum alloy materials suitable for brazing, the material of the solder ring includes but is not limited to 4 series aluminum and other aluminum alloy materials suitable for brazing, and during the welding process of the flange joint 200, the flow channel plate 100 and the solder ring, the welding methods include but are not limited to vacuum brazing and nitrogen shielded welding.

[0077] Next, the pipe flange joint connection structure disclosed in the present application is described in three states: before pairing, after pairing, and after welding:

[0078] Before welding, Figure 1As shown, the flow channel plate 100, the flange joint 200 and the connecting part 300 (solder ring) are all single-body structures, and the connecting part 300 is preferably made by stamping. The flow channel plate 100 and the flange joint 200 are respectively provided with two flow channel openings 130 and two channel openings 220, and the mating end of each flow channel opening 130 is provided with a limiting groove 140, and the mating end of each channel opening 220 is provided with a limiting protrusion, and the first connecting end 110 of the flow channel plate 100 is provided with a plurality of reinforcing rib installation grooves 120, and the second connecting end 210 of the flange joint 200 is provided with a plurality of reinforcing ribs 211. A plurality of protrusions 310 are provided in the middle of the connecting part 300.

[0079] When pairing, see Figure 7 The first connecting end 110 of the flow channel plate 100 and the second connecting end 210 of the flange joint 200 are arranged opposite to each other, the connecting part 300 is nested between the flow channel plate 100 and the flange joint 200, and the two sides of the connecting part 300 are tightly fitted with the first connecting end 110 and the second connecting end 210 respectively. The two flow channel openings 130 and the two channel openings 220 are aligned and internally communicated, the limiting groove 140 and the limiting boss 230 are nested and adapted to each other, and the reinforcing rib mounting groove 120 and the reinforcing rib 211 are snap-fitted and adapted, with high assembly stability, tight connection and low fault tolerance.

[0080] When welding and soldering, taking vacuum brazing as an example, during high-temperature brazing, the connection part 300 is melted by heat and the flow channel plate 100 and the flange joint 200 are tightly connected together, and because the limiting groove 140 and the limiting boss 230 are nested and adapted to each other to form a blocking structure, and the solder after hot melting is blocked from climbing into the flow channel opening 130 and the channel opening 220, and the first step 141 and the second step 231 between the flow channel opening 130 and the channel opening 220, when the solder wants to enter the flow channel opening 130 and the flange joint 200 after hot melting, it must climb over the first step 141 and the second step 231 to prevent the solder from climbing to the sealing surface 221 in the flange joint 200. Finally, the first connection end 110 and the second connection end 210 are tightly fitted, and the flow channel plate 100, the flange joint 200 and the connection part 300 form a whole.

[0081] In summary, the utility model discloses a pipe flange joint connection structure, a vehicle thermal management system including the same, and a vehicle. In the pipe flange joint connection structure, the flow channel plate 100 and the flange joint 200 are matched and connected and then welded. The connecting portion 300 is arranged between the flow channel plate 100 and the flange joint 200. During welding, hot melt provides solder. A limiting groove 140 is arranged at the position of the flow channel opening 130 of the flow channel plate 100. A limiting boss 230 is arranged on the corresponding channel opening 220 of the flange joint 200. When matched, the limiting groove 140 and the limiting boss 230 are locked. The limiting groove 140 and the limiting boss 230 play a guiding, alignment and limiting role in the flow channel opening 130 and the channel opening 220 being aligned and connected. During the welding and hot melting process of the connecting part 300, the limiting groove 140 and the limiting boss 230 will form a blocking structure to block the hot-melted solder from crawling into the flow channel opening 130 and the channel opening 220, preventing the sealing surface 221 of the flange joint 200 from being damaged. In addition, during the welding process, the limiting groove 140 and the limiting boss 230 can ensure that the flow channel opening 130 and the channel opening 220 are always aligned and concentrically connected.

[0082] The arrangement of a plurality of mutually adapted reinforcing rib installation grooves 120, protrusions 310 and reinforcing ribs 211 can further increase the length and area of ​​the welding surface and enhance the strength of the welding joint. Therefore, the joint connection structure of the pipeline flange has the advantages of a stable connection structure, high connection strength and high connection quality.

[0083] Example 2

[0084] It should be noted that this embodiment only illustrates the actual use structure of the joint connection structure of the pipe flange in the vehicle thermal management system. Those skilled in the art can use but are not limited to the connection or setting structure disclosed in this embodiment. Specifically, the implementation method of this embodiment also discloses a vehicle thermal management system, including the joint connection structure of the pipe flange of any one of Example 1, and also including a refrigerant flow pipe and an air-conditioning pipe, the refrigerant flow pipe is connected to the flow port 130 on the flow plate 100, and the air-conditioning pipe is connected to the channel port 220 on the flange joint 200.

[0085] Example 3

[0086] The implementation of this embodiment also discloses a vehicle, including a vehicle body, a joint connection structure of a pipe flange according to any one of Embodiment 1, and a vehicle thermal management system disclosed in Embodiment 2.

[0087] Furthermore, the vehicle may be a common fuel vehicle, electric vehicle, or hybrid vehicle, and may be applied to other vehicle types including but not limited to sedans, SUVs, trucks, and the like.

[0088] It should be noted that, in addition to the implementation methods of the utility model described in the above-mentioned specific specific embodiments, those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. Although the description of the utility model will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the utility model. In order to provide an in-depth understanding of the utility model, the above description contains many specific details, and the utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0089] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0090] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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 the utility model.

[0091] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0092] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0093] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A pipe flange joint connection structure, characterized in that: include: A flow channel plate, one end of which is a first connection end, and the flow channel plate is provided with at least one flow channel opening, each of which penetrates the flow channel plate along the thickness direction of the flow channel plate, and a limiting groove is provided at an end close to the first connection end; A flange joint, wherein the end of the flange joint close to the flow channel plate is a second connection end, and the flange joint is also provided with at least one channel opening penetrating along the thickness direction, and each channel opening is located on one side of the second connection end and is also provided with a limiting boss adapted to the limiting groove, and the limiting boss protrudes from the end surface where the second connection end is located; A connecting portion is provided between the flange joint and the flow channel plate, and two sides of the connecting portion are respectively tightly fitted with the first connecting end portion and the second connecting end portion.

2. The pipe flange joint connection structure according to claim 1, characterized in that: The end surface where the first connecting end is located is a plane, and a plurality of reinforcing rib installation grooves are arranged at intervals on the first connecting end and around the flow channel opening; The end surface where the second connection end is located is a plane, and a plurality of reinforcing ribs adapted to the plurality of reinforcing rib connection grooves are arranged at intervals on the second connection end and around the passage opening; The connecting portion includes a plurality of protrusions adapted to the plurality of reinforcing rib installation grooves, the protrusions protrude toward one side of the first connecting end portion and can be adapted to the reinforcing rib installation grooves, and a recess for accommodating the reinforcing ribs is provided on one side of the protrusions toward the second connecting end portion; and When the flange joint and the flow channel plate are aligned and connected, each of the reinforcing rib installation grooves, the protrusions and the reinforcing ribs are correspondingly nested and adapted in sequence.

3. The pipe flange joint connection structure according to claim 2, characterized in that: The length dimension of the limiting boss protruding from the end surface where the second connecting end portion is located is equal to the sum of the recessed depth dimension of the limiting groove and the thickness dimension of the connecting portion.

4. The pipe flange joint connection structure according to claim 3, characterized in that: A first step portion is formed between the inner wall surface of each flow channel opening and the bottom of the limiting groove, and a second step portion adapted to the first step portion is formed between the outer wall surface of each channel opening and the end surface of the limiting boss.

5. The pipe flange joint connection structure according to claim 4, characterized in that: The flow channel plate is provided with two flow channel openings at intervals, wherein each of the flow channel openings is provided with the limiting groove; and Two passage openings are arranged at intervals on the flange joint, wherein each of the passage openings is provided with a limiting boss matched with the limiting groove.

6. The pipe flange joint connection structure according to claim 5, characterized in that: The flange joint, the flow channel plate and the middle portion of the connecting portion are all provided with through fixing bolt holes.

7. The pipe flange joint connection structure according to claim 6, characterized in that: The flow channel opening and the channel opening are both circular, and the inner diameters of the flow channel opening and the channel opening are the same, and When the flange joint and the flow channel plate are aligned and connected, the flow channel opening and the channel opening are communicated with each other and form concentric circles.

8. The pipe flange joint connection structure according to claim 7, characterized in that: The connecting portion is formed by welding a solder ring clamped between the flange joint and the flow channel plate, the outer contour of the solder ring coincides with the outer peripheral contour of the flange joint, and is provided with a through hole adapted to the limiting boss; wherein The flange joint and the flow channel plate are made of aluminum alloy; The solder ring is made of aluminum alloy solder.

9. A vehicle thermal management system, characterized in that: A joint connection structure of a pipe flange comprising any one of claims 1 to 8, further comprising a refrigerant flow pipe and an air-conditioning pipe, wherein the refrigerant flow pipe is connected to the flow port on the flow plate, and the air-conditioning pipe is connected to the channel port on the flange joint.

10. A vehicle, comprising a vehicle body, characterized in that: Includes the vehicle thermal management system as described in claim 9.

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