Membrane air tightness detection equipment
By using a pneumatic screwdriver to simultaneously tighten the fasteners, the problem of uneven force on the testing fixture was solved, thus improving the accuracy of diaphragm airtightness testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HYDROGEN SEA TECHNOLOGY (HAINAN) CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-01
AI Technical Summary
In the process of diaphragm airtightness testing, the fixing method of the testing fixture in the existing technology leads to uneven force distribution, which affects the testing accuracy.
Pneumatic screwdrivers are used to simultaneously tighten the fasteners, ensuring that the locking bolts evenly fix the testing fixture. The synchronous drive of the pneumatic screwdrivers ensures that the testing fixture is evenly stressed on the testing table.
This improved the accuracy of diaphragm airtightness testing, ensured uniform stress on the testing fixture, and enhanced testing accuracy.
Smart Images
Figure CN224189434U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of testing equipment technology, and in particular relates to a diaphragm airtightness testing device. Background Technology
[0002] An ion exchange membrane electrolyzer mainly consists of an anode, a cathode, an ion exchange membrane, an electrode frame, a current collector, an insulating plate, an end plate, and fasteners. Each electrolyzer is composed of several unit cells connected in series or in parallel.
[0003] Currently, a significant challenge exists in the assembly process of alkaline electrolyzers, proton exchange membrane electrolyzers, and anion exchange membrane electrolyzers: membrane electrode airtightness testing. Some technologies use a testing fixture to press the membrane down for airtightness testing. Due to the high air pressure, the testing fixture needs to be stably fixed on the testing platform. Currently, this is done manually by tightening bolts sequentially, but this results in uneven stress on the fixture on the testing platform, which affects the accuracy of membrane airtightness testing.
[0004] Therefore, how to ensure that the testing fixture is subjected to uniform force during diaphragm testing is a technical problem that urgently needs to be solved by those skilled in the art.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0006] This disclosure provides at least one device for testing the air tightness of a diaphragm.
[0007] In a first aspect, embodiments of this disclosure provide a diaphragm airtightness testing device, comprising: a housing;
[0008] A testing station, configured to hold testing fixtures;
[0009] A clamping mechanism is located above the testing platform and includes several fasteners disposed within the housing;
[0010] The adjustment mechanism includes several locking parts disposed within the housing;
[0011] Among them, a plurality of locking parts correspond one-to-one with a plurality of fasteners, and the locking parts are configured to synchronously drive the fasteners to fix the testing fixture on the testing table.
[0012] In one optional embodiment, the clamping mechanism includes a fixed ring slidably disposed within the housing, an extension ring disposed at the bottom of the fixed ring, and a plurality of fixing holes formed on the extension ring, wherein,
[0013] Several of the fasteners are disposed in corresponding fixing holes.
[0014] In one optional embodiment, the fastener is a locking bolt, and the testing platform is provided with a plurality of bolt holes, wherein...
[0015] The locking bolt extends to the bottom of the retaining ring and connects to the bolt hole.
[0016] In one alternative embodiment, a plurality of the bolt holes are located on the outer ring of the inspection fixture.
[0017] In one optional embodiment, a guide rod is provided inside the housing, the fixing ring is disposed on the fixing plate, and a sliding sleeve is provided around the fixing plate.
[0018] The fixing plate is slidably mounted on the guide rod via the sliding sleeve.
[0019] In one optional embodiment, the locking part includes a mounting plate disposed on the retaining ring and a plurality of pneumatic screwdrivers disposed on the mounting plate, the mounting plate being located above the extension ring, wherein...
[0020] Several of the pneumatic screwdrivers are connected to an air source and are configured to synchronously drive the fasteners to lock.
[0021] In one optional embodiment, a ventilation pipe is further provided inside the fixing ring, and a plurality of air inlets are provided on the side wall of the ventilation pipe, and the pneumatic screwdriver is connected to the air inlets through an air pipe.
[0022] In one optional embodiment, a conveying mechanism is provided on one side of the housing, the conveying mechanism including a lifting section and a linear conveying section, wherein...
[0023] The linear conveyor is configured to convey the testing fixture to the testing table, and the lifting unit is configured to lift the linear conveyor.
[0024] In one alternative embodiment, the linear conveying unit includes a conveying platform and a conveying track, the conveying track being slidably disposed on the conveying platform.
[0025] The beneficial effect of this utility model is that the testing equipment uses a pneumatic screwdriver to simultaneously tighten the fasteners, so that the locking bolts evenly fix the testing fixture on the testing table, thereby making the testing fixture bear force evenly and improving the testing accuracy of the diaphragm.
[0026] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.
[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0029] Figure 1 This is an overall structural diagram of a diaphragm airtightness testing device provided in an embodiment of the present disclosure;
[0030] Figure 2 This is a schematic diagram of the internal structure of a diaphragm airtightness testing device provided in an embodiment of the present disclosure;
[0031] Figure 3 A top view of the internal structure of a diaphragm airtightness testing device provided in an embodiment of this disclosure;
[0032] Figure 4 A schematic diagram of a fixing ring structure for a diaphragm airtightness testing device provided in this embodiment of the present disclosure;
[0033] Figure 5 This is a schematic diagram of a testing fixture for a diaphragm airtightness testing device provided in an embodiment of this disclosure.
[0034] In the picture:
[0035] Housing; 110, guide rod; 120, fixing plate; 130, sliding sleeve;
[0036] Testing table; 210, bolt holes;
[0037] Clamping mechanism; 310, Fastener; 320, Retaining ring; 321, Extension ring; 322, Fixing hole; 323, Air inlet;
[0038] Adjustment mechanism; 410, locking part; 411, mounting plate; 412, pneumatic screwdriver;
[0039] 510. Conveying mechanism; 511. Linear conveyor section; 512. Conveying platform; 513. Conveying track
[0040] 600. Testing fixture; 610. Diaphragm. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0042] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0043] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0044] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0045] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0046] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0047] Research has found that some technologies test the air tightness of diaphragms by pressing them down. Due to the high air pressure, the testing fixture needs to be stably fixed on the testing table. Currently, manual fixing is used, which involves manually tightening bolts one by one to fix the testing fixture. However, this can cause uneven stress on the testing fixture on the testing table, which will affect the accuracy of the air tightness test.
[0048] Based on the above research, this disclosure provides a diaphragm airtightness testing device. By using a pneumatic screwdriver to simultaneously tighten the fasteners, the locking bolts evenly fix the testing fixture on the testing table, thereby ensuring uniform force on the testing fixture and improving testing accuracy.
[0049] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.
[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0051] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0052] See Figure 1 This disclosure provides an airtightness testing device for a diaphragm 610, comprising: a housing 100; a testing platform 200 configured to hold a testing fixture 600; the testing platform 200 is used to hold the testing fixture 600, and a diaphragm 610 is placed inside the testing fixture 600 for airtightness testing of the diaphragm 610; and a clamping mechanism 300 located above the testing platform 200 and including a plurality of fasteners 310 disposed within the housing 100; the clamping mechanism 300 is used to clamp the testing fixture 610. 00, enabling the testing fixture 600 to be stably tested on the testing table 200; the adjustment mechanism 400 includes a plurality of locking parts 410 disposed within the housing 100; the adjustment mechanism 400 is used to adjust the clamping mechanism 300 within the housing 100; wherein, the plurality of locking parts 410 correspond one-to-one with the plurality of fasteners 310, and the locking parts 410 are configured to synchronously drive the fasteners 310 to fix the testing fixture 600 on the testing table 200.
[0053] See Figure 1 and Figure 4 The clamping mechanism 300 includes a fixed ring 320 slidably disposed within the housing 100, an extension ring 321 disposed at the bottom of the fixed ring 320, and a plurality of fixing holes 322 formed on the extension ring 321. The fixed ring 320 is cylindrical, the extension ring 321 is located at the bottom of the fixed ring 320, and the extension ring 321 is provided with a plurality of fixing holes 322 circumferentially. A plurality of fasteners 310 are disposed in the corresponding fixing holes 322.
[0054] See Figure 2 and Figure 3 In some embodiments, the fastener 310 is a locking bolt, which is evenly arranged in the fixing hole 322. The fixing hole 322 is a countersunk hole, and the locking bolt is set in the fixing hole 322. The testing table 200 is provided with a plurality of bolt holes 210, wherein the locking bolt passes through the fixing hole 322 and extends to the bottom of the fixing ring 320, and the locking bolt can be screwed into the threaded hole.
[0055] See Figure 2 A plurality of the bolt holes 210 are located on the outer ring of the testing fixture 600. The bolt holes 210 form a circle, the diameter of which is larger than the diameter of the testing fixture 600, so that the testing fixture 600 can be fixed on the testing table 200.
[0056] See also Figure 2In some embodiments, a guide rod 110 is provided inside the housing 100. The guide rod 110 is vertically disposed inside the housing 100. For stability, a fixing ring 320 is disposed on a fixing plate 120 at each of the four corners of the housing 100. A sliding sleeve 130 is provided around the fixing plate 120. The fixing plate 120 is slidably disposed on the guide rod 110 via the sliding sleeve 130. The sliding sleeve 130 is also disposed at each of the four corners of the fixing plate 120 and is hollow. The sliding sleeve 130 is sleeved on the guide rod 110 and can slide on the guide rod 110.
[0057] See Figure 1 and Figure 2 In some embodiments, the locking part 410 includes a mounting plate 411 disposed on the fixing ring 320 and a plurality of pneumatic screwdrivers 412 disposed on the mounting plate 411. The mounting plate 411 is located above the extension ring 321. To improve the stability of the pneumatic screwdrivers 412, a limit ring is also provided above the mounting plate 411, which is also used to fix the pneumatic screwdrivers 412. The pneumatic screwdrivers 412 are powered by compressed air provided by an air compressor. The compressed air is converted into mechanical energy to drive the internal components. The mounting plate 411 is located above the extension ring 321. The plurality of pneumatic screwdrivers 412 are connected to an air source, which is supplied with compressed air. The compressed air is connected to the screwdrivers through an air pipe. The air pressure usually needs to be maintained at 0.4-0.7 MPa. The pneumatic screwdrivers 412 rotate to screw the fasteners 310 into the bolt holes 210 for locking. By employing several pneumatic screwdrivers 412 working simultaneously, the locking bolts can be screwed into the bolt holes 210 in a synchronized manner, thereby making the force of the clamping and testing fixture 600 more uniform.
[0058] See Figure 3 In some embodiments, a ventilation pipe is also provided inside the fixed ring 320. The side wall of the ventilation pipe is provided with a plurality of air inlets 323. The ventilation pipe is located inside the fixed ring 320, that is, the fixed ring 320 can slide up and down outside the ventilation pipe. The pneumatic screwdriver is connected to the air inlets 323 through an air pipe.
[0059] See Figure 1 and Figure 2 A conveying mechanism 500 is provided on one side of the housing 100. The conveying mechanism 500 includes a lifting part and a linear conveying part 510. The linear conveying part 510 is configured to convey the testing fixture 600 to the testing table 200, and the lifting part is configured to lift the linear conveying part 510.
[0060] See Figure 1The linear conveying unit 510 includes a conveying platform 511 and a conveying track 512, with the conveying track 512 slidably disposed on the conveying platform 511. Since the inspection fixture 600 is relatively heavy and needs to be frequently changed according to the product, the inspection fixture 600 is placed on the conveying track 512. When a corresponding inspection fixture 600 is needed, the conveying track 512 can transport it to the appropriate position, and then place it on the corresponding position on the inspection table 200 by a robotic arm or manually.
[0061] In summary, this testing equipment uses a pneumatic screwdriver to simultaneously tighten the fasteners, ensuring that the locking bolts evenly fix the testing fixture 600 onto the testing table. This results in uniform force on the testing fixture 600 and improves the airtightness testing accuracy of the diaphragm 610.
[0062] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0063] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0064] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0065] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0066] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A diaphragm airtightness testing device, characterized in that, include: Casing (100); The testing station (200) is configured to hold the testing fixture (600) for membrane testing. A clamping mechanism (300) is located above the testing table (200) and includes a number of fasteners (310) disposed within the housing (100). Adjustment mechanism (400) includes a plurality of locking parts (410) disposed within the housing (100); Among them, a plurality of locking parts (410) correspond one-to-one with a plurality of fasteners (310), and the locking parts (410) are configured to synchronously drive the fasteners (310) to fix the testing fixture (600) on the testing table (200).
2. The detection device as described in claim 1, characterized in that, The clamping mechanism (300) includes a fixed ring (320) slidably disposed within the housing (100), an extension ring (321) disposed at the bottom of the fixed ring (320), and a plurality of fixing holes (322) formed on the extension ring (321), wherein, Several of the fasteners (310) are disposed in corresponding fixing holes (322).
3. The detection device as described in claim 2, characterized in that, The fastener (310) is a locking bolt, and the testing platform (200) is provided with a plurality of bolt holes (210), wherein, The locking bolt extends to the bottom of the retaining ring (320) and connects to the bolt hole (210).
4. The detection device as described in claim 3, characterized in that, Several of the bolt holes (210) are located on the outer ring of the inspection fixture (600).
5. The detection device as described in claim 2, characterized in that, A guide rod (110) is provided inside the housing (100), and a fixing ring (320) is provided on a fixing plate (120). A sliding sleeve (130) is provided around the fixing plate (120). The fixing plate (120) is slidably mounted on the guide rod (110) via the sliding sleeve (130).
6. The detection device as described in claim 2, characterized in that, The locking part (410) includes a mounting plate (411) disposed on the fixing ring (320) and a plurality of pneumatic screwdrivers (412) disposed on the mounting plate (411). The mounting plate (411) is located above the extension ring (321). Several of the pneumatic screwdrivers (412) are connected to an air source and are configured to synchronously drive the fasteners (310) to lock.
7. The detection device as described in claim 6, characterized in that, The fixing ring (320) is also provided with a ventilation pipe, and the side wall of the ventilation pipe is provided with a number of air inlets (323). The pneumatic screwdriver (412) is connected to the air inlets (323) through an air pipe.
8. The detection device as described in claim 1, characterized in that, A conveying mechanism (500) is provided on one side of the housing (100). The conveying mechanism (500) includes a lifting part and a linear conveying part (510). The linear conveyor (510) is configured to convey the inspection fixture (600) to the inspection table (200), and the lifting unit is configured to lift the linear conveyor (510).
9. The detection device as described in claim 8, characterized in that, The linear conveying unit (510) includes a conveying platform (511) and a conveying track (512), the conveying track (512) being slidably disposed on the conveying platform (511).