Galvanic pile production line airtightness detection reference piece
By designing a low-cost airtightness testing reference component that simulates the shape and internal gas flow channels of a fuel cell stack, the problems of high cost and difficulty in judging equipment failure in existing technologies are solved, achieving efficient and low-cost airtightness testing results.
Patent Information
- Application Number
- CN202520088768.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing fuel cell stack production line airtightness testing reference parts are costly and difficult to effectively determine whether the equipment's airtightness testing system is malfunctioning.
A simple and low-cost reference component for air tightness testing of fuel cell stack production line was designed. The frame and pipeline structure simulates the shape of the fuel cell stack and the internal gas flow channel. It is connected to the air tightness testing system through pipe joints. The pipeline consists of multiple flow bends and straight pipes.
It enables low-cost and efficient airtightness testing, simplifies equipment fault diagnosis, reduces manufacturing costs, and improves testing accuracy.
Smart Images
Figure CN223710922U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a kind of air tightness detection reference piece of electric pile production line. BACKGROUND
[0002] When batch air tightness problem appears in electric pile production, it cannot be determined whether electric pile air tightness batch is unqualified or equipment air tightness detection system failure problem.Therefore, it needs to use electric pile production line air tightness detection reference piece to effectively determine whether equipment air tightness detection system is failure.The existing electric pile production line air tightness detection reference piece usually uses the electric pile of air tightness qualification, but the electric pile is high in cost, and can be used as electric pile production line air tightness detection reference piece only after special treatment.
[0003] Therefore, it is urgent to provide a kind of air tightness detection reference piece with simple structure and low cost to determine whether equipment air tightness detection system is failure. UTILITY MODEL CONTENT
[0004] The utility model is to provide a kind of electric pile production line air tightness detection reference piece, which is not only simple in structure, low in cost, and convenient to use.
[0005] The utility model discloses a kind of electric pile production line air tightness detection reference piece, comprising: frame, the frame defines installation cavity;Pipe line structure, the pipe line structure includes flow pipe line and two pipe joints connected to the flow pipe line, two The pipe joint is worn in the frame and is used to connect air tightness detection system, the flow pipe line is installed in the installation cavity, the flow pipe line is used to simulate the gas flow passage in electric pile, and includes multiple flow circulation elbow and multiple flow straight pipes connected.
[0006] In some embodiments, the frame includes: two support plates, two The support plate is arranged at intervals;Multiple support columns, two ends of each The support column is connected with two The support plate respectively, and multiple The support column is arranged at intervals along the outer contour of The support plate.
[0007] In some embodiments, the pipe joint includes inner joint and outer joint, the inner joint is located in the installation cavity, and one end is inserted in the flow pipe line, the outer joint is located outside the installation cavity, and one end of the outer joint is sealingly connected with the other end of the inner joint.
[0008] In some specific embodiments, the inner joint includes first pipe body and first fixed plate, the first fixed plate is sleeved on the first pipe body and connected with the inner side wall of the frame, and the first pipe body is inserted in the flow pipe line;The outer joint includes second pipe body and second fixed plate, the second fixed plate is sleeved on the second pipe body and connected with the outer side wall of the frame, and the second pipe body is sealingly connected with the first pipe body.
[0009] In some more specific embodiments, the first fixing plate is provided with a first fixing hole, the second fixing plate is provided with a second fixing hole, and the frame is provided with a third fixing hole, and a fixing member is arranged through the second fixing hole, the third fixing hole and the first fixing hole to fix the first fixing plate and the second fixing plate on the two opposite sides of the frame.
[0010] In some optional embodiments, the fixing member comprises a stud and two nuts, the stud is arranged through the second fixing hole, the third fixing hole and the first fixing hole, and the two nuts are matched on the two ends of the stud and abut against the first fixing plate and the second fixing plate respectively.
[0011] In some embodiments, the flow pipeline is provided with a tee joint at two ends, the first port and the second port of the tee joint are respectively directed to the two opposite side walls of the frame, and the axial direction of the third port of the tee joint is perpendicular to the axial directions of the first port and the second port.
[0012] The first port is closed, the second port is communicated with the flow pipeline, and the third port is connected with a joint elbow pipe used for being connected with the pipe joint.
[0013] In some specific embodiments, the flow pipeline comprises a plurality of pipeline units connected in sequence, each pipeline unit comprises a plurality of flow elbows arranged in sequence in a first direction and a plurality of flow straight pipes, and a plurality of pipeline units are arranged in a second direction perpendicular to the first direction.
[0014] In some more specific embodiments, in each pipeline unit, part of the flow straight pipes are arranged in the first direction, and the other part of the flow straight pipes are arranged in a third direction perpendicular to the first direction and the second direction.
[0015] In some embodiments, the frame is provided with mounting ears used for fixing the frame on the air tightness detection system.
[0016] To achieve the above object, the utility model adopts the following technical scheme:
[0017] The air tightness detection reference piece of the electric pile production line has the advantages that the frame simulates the shape of the electric pile, the flow pipeline simulates the gas flow channel inside the electric pile, the pipe joint is used to connect the air tightness detection system, the flow pipeline is composed of a plurality of flow elbows and a plurality of flow straight pipes, and the structure is very simple, convenient to manufacture and use.
[0018] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a structural schematic view of the gas tightness detection reference piece of the stack production line of the embodiment of the present application;
[0020] Figure 2 is a local structural schematic view of the gas tightness detection reference piece of the stack production line of the embodiment of the present application;
[0021] Figure 3 is Figure 2 the enlarged schematic view at A shown in the figure;
[0022] Figure 4 is a structural schematic view of the pipeline structure of the embodiment of the present application.
[0023] Reference signs:
[0024] 100, frame; 101, mounting cavity; 110, support plate; 111, mounting lug; 120, support column;
[0025] 200, pipeline structure; 210, flow pipeline; 211, pipeline unit; 2111, flow elbow; 2112, flow straight pipe; 220, pipe joint; 221, inner joint; 2211, first pipe body; 2212, first fixing plate; 222, outer joint; 2221, second pipe body; 2222, second fixing plate; 230, tee pipe; 240, joint elbow;
[0026] 300, fixing piece; 310, stud; 320, nut. DETAILED DESCRIPTION
[0027] The present application will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all the structures.
[0028] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element's interaction relationship.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0029] In the description of the embodiment, the orientation or position relationship of the terms "upper", "lower", "left", "right", "front", "back" and the like is based on the orientation or position relationship shown in the drawing, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0030] The utility model discloses a kind of electric pile production line airtightness detection reference piece, reference Figure 1 As shown in the drawing, electric pile production line airtightness detection reference piece includes frame 100 and pipeline structure 200, frame 100 defines installation cavity 101, pipeline structure 200 includes flow pipeline 210 and two pipe joints 220 connected to flow pipeline 210, two pipe joints 220 are worn in frame 100 and are used to connect airtightness detection system, flow pipeline 210 is installed in installation cavity 101, flow pipeline 210 is used to simulate the gas flow passage inside electric pile, and includes multiple flow circulation elbow pipe 2111 and multiple flow straight pipe 2112 connected. It can be understood that the electric pile production line airtightness detection reference piece of the embodiment adopts frame 100 to simulate electric pile appearance, simulates the gas flow passage inside electric pile by flow pipeline 210, realizes the connection with airtightness detection system by pipe joint 220, flow pipeline 210 is connected by multiple flow circulation elbow pipe 2111 and multiple flow straight pipe 2112, structure is very simple, convenient to manufacture and convenient to use.
[0031] Optionally, pipe joint 220 and flow pipeline 210 are welded, and flow circulation elbow pipe 2111 and flow straight pipe 2112 are welded. Thus, the cost of the entire pipeline structure 200 can be low, and the sealing performance is good. In order to ensure that the electric pile production line airtightness detection reference piece can be used stably, after welding, the pipeline structure 200 can be subjected to a water immersion test, and the leakage rate of multiple offline external leakage detection is 0. Determine that the electric pile production line airtightness detection reference piece is a qualified product, which can be used to test the airtightness detection system.
[0032] Optionally, the pipeline structure 200 adopts PPH (PolyPropylene Homopolymer, polypropylene homopolymer). Thus, the manufacturing cost of the pipeline structure 200 can be reduced, and the heat preservation effect is good without heat preservation treatment. Of course, in other embodiments of the present application, the material of the pipeline structure 200 can also be selected according to actual needs.
[0033] Reference Figure 1 As shown in the figure, the frame 100 includes two support plates 110 and a plurality of support columns 120, the two support plates 110 are arranged at intervals, the two ends of each support column 120 are connected to the two support plates 110 respectively, and the plurality of support columns 120 are arranged at intervals along the outer contour of the support plate 110. It can be understood that the frame 100 is manufactured by using the support plate 110 and the support column 120, which simplifies the structure of the frame 100, facilitates the production of the frame 100, and reduces the manufacturing cost of the frame 100. In this embodiment, the support plate 110 is square, and the support column 120 is four, and is located at the four corners of the support plate 110 respectively. Of course, in other embodiments of the present application, the shape of the support plate 110 and the number of support columns 120 can be adjusted according to actual needs.
[0034] Reference Figure 3 As shown in the figure, the pipe joint 220 includes an inner joint 221 and an outer joint 222, the inner joint 221 is located in the mounting cavity 101, and one end is inserted into the flow pipeline 210, the outer joint 222 is located outside the mounting cavity 101, and one end of the outer joint 222 is sealingly connected to the other end of the inner joint 221. It can be understood that by connecting the inner joint 221 to the flow pipeline 210 and sealingly connecting the outer joint 222 to the inner joint 221, the connection of the flow pipeline 210 to the air tightness detection system is realized through the inner joint 221 and the outer joint 222, which is convenient to assemble and has good sealing performance. It should be noted that the sealing connection mode of the inner joint 221 and the outer joint 222 can be hot melting welding, or sealing gasket or sealing material can be used to realize sealing connection, and the sealing connection mode of the inner joint 221 and the outer joint 222 can be selected according to actual needs.
[0035] Optionally, reference Figure 3As shown, the inner joint 221 comprises a first pipe body 2211 and a first fixing plate 2212, the first fixing plate 2212 is sleeved on the first pipe body 2211 and connected with the inner side wall of the frame 100, and the first pipe body 2211 is inserted into the flow pipe 210; the outer joint 222 comprises a second pipe body 2221 and a second fixing plate 2222, the second fixing plate 2222 is sleeved on the second pipe body 2221 and connected with the outer side wall of the frame 100, and the second pipe body 2221 is sealingly connected with the first pipe body 2211. It can be understood that the connection between the inner joint 221 and the frame 100 is realized by the first fixing plate 2212, and the connection between the outer joint 222 and the frame 100 is realized by the second fixing plate 2222, which can not only facilitate the installation of the inner joint 221 and the outer joint 222 on the frame 100 during assembly, but also ensure the stability of the inner joint 221 and the outer joint 222, thereby avoiding the phenomenon of reduced air tightness caused by unstable installation of the inner joint 221 and the outer joint 222.
[0036] Further, the first fixing plate 2212 is provided with a first fixing hole, the second fixing plate 2222 is provided with a second fixing hole, and the frame 100 is provided with a third fixing hole, and the fixing member 300 is arranged through the second fixing hole, the third fixing hole and the first fixing hole to fix the first fixing plate 2212 and the second fixing plate 2222 on the two opposite sides of the frame 100. It can be understood that by arranging the fixing member 300 through the second fixing hole, the third fixing hole and the first fixing hole to fix the first fixing plate 2212 and the second fixing plate 2222 on the two opposite sides of the frame 100, the first fixing plate 2212, the second fixing plate 2222 and the frame 100 can be fixed by one fixing member 300, which simplifies the connection structure of the inner joint 221, the outer joint 222 and the frame 100, and is beneficial to simplify the assembly operation and improve the assembly efficiency.
[0037] Further, the first fixing plate 2212 is provided with a first fixing hole, the second fixing plate 2222 is provided with a second fixing hole, and the frame 100 is provided with a third fixing hole, and the fixing member 300 is arranged through the second fixing hole, the third fixing hole and the first fixing hole to fix the first fixing plate 2212 and the second fixing plate 2222 on the two opposite sides of the frame 100. It can be understood that by arranging the fixing member 300 through the second fixing hole, the third fixing hole and the first fixing hole to fix the first fixing plate 2212 and the second fixing plate 2222 on the two opposite sides of the frame 100, the first fixing plate 2212, the second fixing plate 2222 and the frame 100 can be fixed by one fixing member 300, which simplifies the connection structure of the inner joint 221, the outer joint 222 and the frame 100, and is beneficial to simplify the assembly operation and improve the assembly efficiency. Figure 3As shown, the fixing member 300 includes a stud 310 and two nuts 320, the stud 310 is provided through the second fixing hole, the third fixing hole and the first fixing hole, and the two nuts 320 are matched at both ends of the stud 310 and abut against the first fixed plate 2212 and the second fixed plate 2222 respectively. It can be understood that, in the actual assembly process, only the stud 310 needs to be passed through the second fixing hole, the third fixing hole and the first fixing hole, and then the two nuts 320 are screwed into the stud 310, and the installation can be completed by rotating the two nuts 320 to abut against the first fixed plate 2212 and the second fixed plate 2222 respectively. This fixing structure using the stud 310 and the nut 320 can facilitate assembly and improve assembly efficiency on the one hand, and can improve the stability of the inner joint 221 and the outer joint 222 on the other hand, thereby avoiding the phenomenon that the air tightness is reduced due to unstable installation of the inner joint 221 and the outer joint 222. Of course, it should be noted that in the embodiment of the utility model, the fixing member 300 can also use other structures such as a pin and a rivet, and is not limited to the above description.
[0038] Preferably, the second fixing hole, the third fixing hole and the first fixing hole are all multiple. Therefore, the inner joint 221 and the outer joint 222 can be fixed to the frame 100 by multiple fixing members 300, which can improve the stability of the inner joint 221 and the outer joint 222, thereby avoiding the phenomenon that the air tightness is reduced due to unstable installation of the inner joint 221 and the outer joint 222. In the embodiment, the second fixing hole, the third fixing hole and the first fixing hole are all four and are distributed in a square shape. Of course, in other embodiments of the utility model, the number and arrangement of the second fixing hole, the third fixing hole and the first fixing hole can be selected according to actual needs.
[0039] Reference Figure 2 As shown, the two ends of the flow pipeline 210 are provided with a three-way pipe 230, the first port and the second port of the three-way pipe 230 are respectively directed to the two opposite side walls of the frame 100, and the axial direction of the third port of the three-way pipe 230 is perpendicular to the axial directions of the first port and the second port. The first port is closed, the second port is communicated with the flow pipeline 210, and the third port is connected with a joint elbow 240, which is used to be connected with the pipe joint 220. It can be understood that, by providing the joint elbow 240, the flow pipeline 210 can be conveniently connected with the pipe joint 220, and the shape of the flow pipeline 210 can not be disturbed by the installation position of the pipe joint 220, so that the gas passage in the flow pipeline 210 can be more consistent with the gas passage of the stack, thereby facilitating the improvement of the test precision.
[0040] Optionally, reference Figure 4As shown, the flow pipeline 210 comprises a plurality of pipeline units 211 connected in sequence, each pipeline unit 211 comprises a plurality of flow bends 2111 and flow straight pipes 2112 arranged in sequence along a first direction, and the plurality of pipeline units 211 are arranged along a second direction, and the second direction is perpendicular to the first direction. It can be understood that the flow pipeline 210 is divided into a plurality of pipeline units 211, and different sizes of the stack production line air tightness detection reference piece can be combined according to the test needs in the actual assembly process.
[0041] Further, in each pipeline unit 211, part of the plurality of flow straight pipes 2112 is arranged in the first direction, and the other part of the plurality of flow straight pipes 2112 is arranged in a third direction, and the third direction is perpendicular to the first direction and the second direction. It can be understood that by arranging the flow straight pipes 2112 extending in the third direction and the first direction, the gas passage in the flow pipeline 210 can be more in line with the gas flow channel of the stack, thereby facilitating the improvement of the test precision.
[0042] In some embodiments, the reference Figure 1 As shown, the frame 100 is provided with mounting ears 111, and the mounting ears 111 are used to fix the frame 100 on the air tightness detection system. In the actual installation process, screws, pins or rivets can be used to pass through the mounting ears 111 to fix the frame 100 on the air tightness detection system, so that the stack production line air tightness detection reference piece can be conveniently fixed on the air tightness detection system.
[0043] In the description of the present specification, the description of the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0044] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims
1. A stack production line air tightness detection reference piece, characterized in that, The utility model relates to a kind of gas leakage detection system, including: Frame (100), the frame (100) defines mounting cavity (101); Pipe structure (200), the pipe structure (200) includes flow pipe (210) and two connecting pipe joints (220) in the flow pipe (210), two the pipe joint (220) is worn in the frame (100) and is used to connect gas leakage detection system, the flow pipe (210) is installed in the mounting cavity (101), the flow pipe (210) is used to simulate the gas flow channel inside the electric pile, and includes multiple flow circulation bends (2111) and multiple flow straight pipes (2112) connected.
2. The stack production line air tightness detection reference piece according to claim 1, characterized in that, The frame (100) includes: Two support plates (110), two the support plate (110) is arranged at intervals; Multiple support columns (120), the two ends of each support column (120) are connected with two support plates (110) respectively, and multiple support columns (120) are arranged at intervals along the outer contour of the support plate (110).
3. The stack production line air tightness detection reference piece of claim 1, wherein, The pipe joint (220) includes inner joint (221) and outer joint (222), the inner joint (221) is located in the mounting cavity (101), and one end is inserted in the flow pipe (210), the outer joint (222) is located outside the mounting cavity (101), and one end of the outer joint (222) is sealingly connected with the other end of the inner joint (221).
4. The stack production line air tightness detection reference piece according to claim 3, characterized in that, The inner joint (221) includes first pipe body (2211) and first fixed plate (2212), the first fixed plate (2212) is sleeved on the first pipe body (2211) and connected with the inner side wall of the frame (100), and the first pipe body (2211) is inserted in the flow pipe (210); The outer joint (222) includes second pipe body (2221) and second fixed plate (2222), the second fixed plate (2222) is sleeved on the second pipe body (2221) and connected with the outer side wall of the frame (100), and the second pipe body (2221) is sealingly connected with the first pipe body (2211).
5. The stack production line air tightness detection reference piece according to claim 4, characterized in that, First fixing hole is provided on the first fixed plate (2212), second fixing hole is provided on the second fixed plate (2222), and third fixing hole is provided on the frame (100), and fixing member (300) is arranged in the second fixing hole, the third fixing hole and the first fixing hole to fix the first fixed plate (2212) and the second fixed plate (2222) on the two sides of the frame (100) arranged oppositely.
6. The stack production line air tightness detection reference piece of claim 5, wherein, The fixing member (300) includes stud (310) and two nuts (320), the stud (310) is arranged in the second fixing hole, the third fixing hole and the first fixing hole, and the two nuts (320) are matched on the two ends of the stud (310) and are abutted on the first fixed plate (2212) and the second fixed plate (2222) respectively.
7. The stack production line air tightness detection reference piece according to any one of claims 1-6, characterized in that, The flow pipeline (210) is provided with a three-way pipe (230) at two ends, a first port and a second port of the three-way pipe (230) respectively face two opposite side walls of the frame (100), and an axis of a third port of the three-way pipe (230) is perpendicular to axes of the first port and the second port. The first port is closed, the second port is in communication with the flow pipeline (210), and the third port is connected with a joint elbow (240) used for being connected with the pipe joint (220).
8. The stack production line air tightness detection reference piece according to any one of claims 1-6, characterized in that, The flow pipeline (210) comprises a plurality of pipeline units (211) connected in sequence, each pipeline unit (211) comprises a plurality of flow elbows (2111) and flow straight pipes (2112) arranged in sequence along a first direction, and a plurality of pipeline units (211) are arranged along a second direction perpendicular to the first direction.
9. The stack production line air tightness detection reference piece according to claim 8, characterized in that, Among the plurality of flow straight pipes (2112) in each pipeline unit (211), part of the flow straight pipes (2112) are arranged in extension along the first direction, and the other part of the flow straight pipes (2112) are arranged in extension along a third direction perpendicular to the first direction and the second direction.
10. The stack production line air tightness detection reference piece according to any one of claims 1-6, characterized in that, The frame (100) is provided with a mounting lug (111) used for fixing the frame (100) on the air tightness detection system.