Sample preparation equipment for plastic inner container of hydrogen cylinder
By designing a sample preparation device for the plastic liner of a hydrogen cylinder with flattening and cutting components, the applicability and time issues of the sample preparation methods in the existing technology have been solved, and rapid and regular sample preparation has been achieved, meeting the standard test requirements for the liner of a hydrogen cylinder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN XIANHU LAB
- Filing Date
- 2025-01-16
- Publication Date
- 2026-04-10
AI Technical Summary
In the existing technology, the sample preparation method for the plastic inner liner of high-pressure hydrogen cylinder has low applicability, is time-consuming, has inconsistent dimensions, and irregular edges, making it difficult to meet the test requirements of GB/T42610—2023 standard.
A sample preparation device for a plastic inner liner of a hydrogen cylinder was designed, including a flattening component and a cutting component. The cutting head is clamped and heated by a flattening drive mechanism, and the cutting is completed in one go by a cutting drive mechanism, ensuring that the sample edges are regular.
It achieves rapid sample preparation with uniform sample size and neat edges, making it suitable for efficient sample preparation of hydrogen cylinder liners and meeting standard requirements.
Smart Images
Figure CN224109156U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of high pressure hydrogen cylinder plastic liner test, specifically to a kind of sample preparation equipment of hydrogen cylinder plastic liner. BACKGROUND
[0002] Hydrogen energy is a clean, flexible, zero-carbon secondary energy. At present, as a high-pressure lightweight hydrogen storage solution, type IV hydrogen storage cylinder has gradually become the focus of high-pressure gaseous hydrogen storage technology research and industry. In order to promote the standardization of type IV hydrogen storage cylinder industry, GB / T42610-2023 High Pressure Hydrogen Cylinder Plastic Liner and Hydrogen Compatibility Test Method specifies the general requirements, test conditions and test methods of high pressure hydrogen cylinder plastic liner hydrogen compatibility test. Among them, the hydrogen permeation test, physical property test, tensile property test and hydrogen aging test are specified for the plastic liner material, and the test sample is taken from the liner.
[0003] Hydrogen permeation test, physical property test, tensile property test and hydrogen aging test have strict size requirements for test samples. However, the cylinder liner is cylindrical with large curvature. How to take the test sample meeting the specification requirements from the cylinder plastic liner has become a difficult problem. Therefore, there is an urgent need for a high-pressure hydrogen cylinder plastic liner rapid sample preparation equipment with strong applicability, short time consumption and regular edge. SUMMARY
[0004] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the utility model provides a sample preparation equipment for hydrogen cylinder plastic liner, which solves the problems of low applicability, long time consumption, non-uniform size and irregular edge of the current hydrogen cylinder plastic liner sample preparation method.
[0005] According to the sample preparation equipment for hydrogen cylinder plastic liner of the utility model embodiment, it comprises:
[0006] The flattening assembly comprises a flattening driving mechanism, a pressing plate and a pressing table. The pressing plate and the pressing table are arranged in opposite parallel to form a clamping gap. The flattening driving mechanism drives the pressing plate and the pressing table to move closer or farther away. The pressing plate is provided with at least one hollow cutting groove.
[0007] The cutting assembly comprises a cutting driving mechanism and at least one cutter head. The cutter head is provided with a heating device for heating the cutter head. At least one cutter head is arranged on the side of the pressing plate away from the pressing table. At least one cutter head corresponds to at least one cutting groove. The cutting driving mechanism is in transmission connection with at least one cutter head. The cutting driving mechanism drives at least one cutter head to pass through the cutting groove to extend into the clamping gap.
[0008] The sample preparation equipment for the hydrogen cylinder plastic liner has at least the following beneficial effects:
[0009] The sample preparation equipment for the hydrogen cylinder plastic liner has at least the following beneficial effects:
[0010] According to some embodiments of the present application, the side of the pressing table facing the pressing plate is provided with a top plate, a plurality of supporting rods are connected between the top plate and the pressing table, the pressing plate is arranged between the top plate and the pressing table, the pressing plate is provided with a plurality of sliding guide structures in sliding cooperation with the supporting rods, and the pressing driving mechanism is in transmission connection with the pressing plate.
[0011] According to some embodiments of the present application, the pressing driving mechanism comprises a plurality of pressing plate driving units, the pressing plate driving units are installed on the top plate, and the driving ends of the pressing plate driving units are respectively connected to the center and the periphery of the pressing plate.
[0012] According to some embodiments of the present application, the cutting assembly further comprises at least one temperature detector and a temperature controller, the temperature detector is used for detecting the temperature of the cutter head, the temperature controller is connected with the heating device and the temperature detector, and the temperature controller is configured to receive the temperature signal of the temperature detector to control the heating temperature of the cutter head.
[0013] According to some embodiments of the present application, the pressing table is provided with a heat sensor and a cutter head reset controller, the heat sensor is used for detecting the temperature of the pressing table, the cutter head reset controller is connected with the heat sensor and the cutting driving mechanism, and the cutter head reset controller is configured to receive the temperature signal of the heat sensor to control the cutter head to reset under the driving of the cutting driving mechanism.
[0014] According to some embodiments of the present application, the cutter head is a sleeve cutter.
[0015] According to some embodiments of the present application, the cutting assembly further comprises at least one ejection mechanism, and the at least one ejection mechanism comprises a top rod fixedly arranged on a cutting movement path of the cutter head, and the top rod is provided with a top head extending into the cutter head along a cutting infeed direction of the cutter head.
[0016] According to some embodiments of the present application, the cutter head is provided with a material ejection channel for the top rod to pass through the cutter head.
[0017] According to some embodiments of the present application, the cutter head is detachably connected with the cutting driving mechanism through a quick release structure.
[0018] According to some embodiments of the present application, the pressing table is provided with a backing plate on a side facing the pressing plate.
[0019] Other features and advantages of the present application will be illustrated in the following description, and some of them will become apparent from the description, or will be understood by those skilled in the art through implementation of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0020] The present application will be further described below in combination with the drawings and embodiments, in which:
[0021] Figure 1 A front view of one embodiment of the sample preparation equipment for the plastic liner of the hydrogen cylinder provided by the present application;
[0022] Figure 2 A sectional view of one embodiment of the sample preparation equipment for the plastic liner of the hydrogen cylinder provided by the present application;
[0023] Figure 3 A top-down sectional view of one embodiment of the sample preparation equipment for the plastic liner of the hydrogen cylinder provided by the present application;
[0024] LIST OF REFERENCE NUMBERS
[0025] Flattening assembly 100; flattening driving mechanism 110; pressing plate driving unit 111; pressing plate 120; cutting groove 121; pressing table 130; backing plate 131; thermal sensor 132; clamping gap 140; top plate 150; support rod 160;
[0026] Cutting assembly 200; cutting driving mechanism 210; cutter head 220; heating device 230; top rod 240;
[0027] Plastic liner 300. DETAILED DESCRIPTION
[0028] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.
[0029] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc., is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application.
[0030] In the description of the present application, the plurality refers to two or more. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0031] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.
[0032] The technical scheme of the present application will be described below in detail with reference to the drawings. Obviously, the following described embodiments are only part of the embodiments of the present application, not all embodiments.
[0033] Hydrogen energy is a clean, flexible, zero-carbon secondary energy. At present, as a high-pressure lightweight hydrogen storage solution, type IV hydrogen storage cylinder has gradually become the research focus and industry hotspot of high-pressure gaseous hydrogen storage technology. In order to promote the standardization of type IV hydrogen storage cylinder industry, GB / T42610-2023 High Pressure Hydrogen Cylinder Plastic Liner 300 and Hydrogen Compatibility Test Method specifies the general requirements, test conditions and test methods of hydrogen compatibility test of high pressure hydrogen cylinder plastic liner. Among them, the hydrogen permeation test, physical property test, tensile property test and hydrogen aging test are specified for the plastic liner material, and the test sample is taken from the liner.
[0034] Hydrogen permeation test, physical property test, tensile property test and hydrogen aging test have strict size requirements for the sample. However, the cylinder liner is cylindrical and has a large curvature. How to take the sample meeting the specification requirements from the plastic liner of the cylinder has become a difficult problem. Therefore, there is an urgent need in the industry for a high-pressure hydrogen cylinder plastic liner rapid sampling method which has strong applicability, short time consumption and can ensure the regularity of the edge of the sample.
[0035] To solve the above problems, the utility model provides a kind of hydrogen cylinder plastic liner's sample preparation equipment, can effectively solve the current hydrogen storage cylinder plastic liner sample preparation method low applicability, time-consuming, size is not unified, edge irregularity Problem.
[0036] Reference Figure 1 、 Figure 2 And Figure 3 As shown, the sample preparation equipment makes the following embodiments:
[0037] Reference Figure 1 As shown, the utility model embodiment sample preparation equipment includes flattening assembly 100 and cutting assembly 200.
[0038] Among them, flattening assembly 100 is used to flatten the hydrogen cylinder plastic liner 300 with curvature to facilitate subsequent cutting, and flattening assembly 100 includes flattening drive mechanism 110, pressing plate 120 and pressing table 130, pressing plate 120 and pressing table 130 are oppositely parallel to form clamping gap 140 between pressing plate 120 and pressing table 130, clamping gap 140 is used to place the clamped curved hydrogen cylinder plastic liner 300, and flattening drive mechanism 110 is used to drive pressing plate 120 and pressing table 130 to approach and move away from each other.
[0039] For the use mode of flattening assembly 100: place the plastic liner 300 of hydrogen cylinder in clamping gap 140, flattening drive mechanism 110 drives pressing plate 120 and pressing table 130 to approach each other, clamping gap 140 gradually decreases, and the side of pressing plate 120 and pressing table 130 approaching each other contacts plastic liner 300 and exerts pressure on plastic liner 300 to flatten plastic liner 300.
[0040] In this embodiment, to facilitate the description of the positional relationship between the components, the up-down direction is set, and pressing plate 120 and pressing table 130 are oppositely arranged in the up-down direction, and it can be understood that the clamping gap 140 extends along the horizontal direction, which is more convenient when placing the plastic liner 300 and will not fall off, and in other embodiments, pressing plate 120 and pressing table 130 can be arranged in other directions, such as horizontally spaced apart, at this time, clamping gap 140 extends vertically, and then needs to cooperate with clamping components to fix plastic liner 300.
[0041] Reference Figure 2 As shown, to make pressing plate 120 not affect the cutting process, at least one cutting groove 121 of openwork type is provided on pressing plate 120, the shape of cutting groove 121 is the same as the shape of the required test piece, and the size of cutting groove 121 is slightly larger than the size of the test piece to ensure that cutting assembly 200 does not contact pressing plate 120 during cutting process, to avoid mutual friction and cause wear or jam.
[0042] Further, the flattening driving mechanism 110 of the embodiment is in transmission connection with the pressing plate 120, and the pressing table 130 is arranged on the fixed table and kept stationary, so as to reduce the gravity center and improve the stability and reliability of the whole sample preparation equipment.
[0043] The top plate 150 is further arranged on the upper side of the pressing plate 120, and the top plate 150 and the pressing table 130 are connected through a plurality of supporting rods 160. It can be understood that, in the embodiment, the supporting rods 160 are arranged in the up-down direction, and the supporting rods 160 are connected to the periphery of the top plate 150 and the pressing table 130, thereby playing a supporting and bearing role and being uniformly stressed.
[0044] Further, the pressing plate 120 is arranged between the top plate 150 and the pressing table 130, and a plurality of sliding guide structures in sliding cooperation with the supporting rods 160 are arranged on the periphery of the pressing plate 120, thereby playing a guiding role on the pressing plate 120 and enabling the pressing plate 120 to move in the extension direction of the supporting rods 160, i.e., in the up-down direction. Specifically, the sliding guide structure of the embodiment is a plurality of through holes arranged on the periphery of the pressing plate 120, and the plurality of through holes are one-to-one sleeved on the plurality of supporting rods 160, so that the pressing plate 120 can move in the up-down direction. The inner surface of the through hole and the surface of the supporting rod 160 need to be treated to be smooth, so as to facilitate the smooth movement of the pressing plate 120 along the supporting rod 160.
[0045] In other embodiments, the sliding guide structure can adopt other structures, such as a sliding block, as long as it can play a guiding role on the pressing plate 120.
[0046] As shown in FIG. 1, Figure 3 The flattening driving mechanism 110 of the embodiment includes a plurality of flattening driving units 111, the flattening driving units 111 are installed on the top plate 150, the flattening driving units 111 are provided with flattening driving ends, the flattening driving ends of the plurality of flattening driving units 111 are respectively connected to the center and the periphery of the pressing plate 120, so that the flattening driving units 111 can apply force to the pressing plate 120 in a balanced manner and the pressing plate 120 is not easy to tilt and deviate. In the embodiment, the flattening driving units 111 adopt a hollow telescopic rod structure, the flattening driving units 111 connected to the periphery of the pressing plate 120 are wrapped on the supporting rods 160, which can further play a guiding role and integrate the supporting rods 160 and the flattening driving units 111, so that the structure is more simple. The flattening driving units 111 can be a hydraulic ejecting mechanism, a mechanical ejecting mechanism, a pneumatic ejecting mechanism, and an electric ejecting mechanism.
[0047] The cutting assembly 200 of the embodiment comprises a cutting driving mechanism 210 and a plurality of cutter heads 220, the initial position of the cutter heads 220 is set on the side of the pressing plate 120 away from the clamping gap 140, so as to prevent the user from being cut by the cutter heads 220 when placing the plastic liner 300, and at the same time, avoid damaging the cutter heads 220, the cutting driving mechanism 210 is installed on the top plate 150, the cutting driving mechanism 210 is in transmission connection with the cutter heads 220, the cutting driving mechanism 210 is used to drive the cutter heads 220 to move in the up-down direction until passing through the cutting groove 121, so as to cut the plastic liner 300, and the cutting driving mechanism 210 can adopt a hydraulic ejection mechanism, a mechanical ejection mechanism, a pneumatic ejection mechanism and an electric ejection mechanism, etc.
[0048] The cutter heads 220 and the cutting grooves 121 are one-to-one corresponding in number, position and size.
[0049] The cutter heads 220 of the embodiment are sleeve cutters, the shape of the cutter heads 220 is consistent with the required sample piece, and the sample piece can be obtained only by one-time pressing and cutting, the cutting efficiency is high, the steps are simple, and at the same time, the sample piece formed during each pressing and cutting can keep the shape and size uniform.
[0050] Further, the shape of the cutter heads 220 can be set according to the test requirements, generally including a circular hydrogen permeation sample, a long strip-shaped physical performance sample and a dumbbell-shaped tensile performance sample, in order to meet different test requirements, the cutter heads 220 are detachably connected with the cutting driving mechanism 210 through a quick release structure, so as to facilitate replacement.
[0051] Further, the cutter heads 220 are also provided with a heating device 230, the heating device 230 is used to heat the cutter heads 220, so that when the cutter heads 220 contact the plastic liner 300, the plastic liner 300 is softened to a certain extent by high temperature, so that the cutting process is more efficient.
[0052] Since the heating temperature of the cutter heads 220 has a great influence on the sample preparation effect, if it is too low, the plastic liner 300 cannot be softened, and if it is too high, the edge of the plastic liner 300 will be melted, resulting in irregular sample piece edge, the cutting assembly 200 of the embodiment further comprises at least one temperature detector and a temperature controller, the temperature controller is connected with the heating device 230 and the temperature detector respectively, the temperature detector is used to monitor the temperature of the cutter heads 220 in real time and transmit the temperature signal to the temperature controller, and the temperature controller controls the heating device 230 according to the received temperature signal, so as to ensure that the heating temperature is maintained within a certain range.
[0053] In the embodiment, the temperature of the knife head 220 should be higher than the glass transition temperature of the base material of the plastic liner 300 and lower than the melting point of the base material of the plastic liner 300. It is recommended that the temperature of the knife head 220 is about 20℃ higher than the glass transition temperature of the base material of the liner, so as to ensure that the edges of the sample pieces are smooth and flat while improving the cutting efficiency.
[0054] In order to make the knife head 220 retreat in time after completing the cutting process, avoid the knife head 220 from being worn and blunt and the pressure table 130 from being damaged due to continuous pressing, the pressure table 130 is further provided with a thermal sensor 132 and a retreat controller. The retreat controller is connected with the thermal sensor 132 and the cutting driving mechanism 210. The thermal sensor 132 is used to monitor the temperature of the upper surface of the pressure table 130 in real time and transmit the temperature signal to the retreat controller. When the temperature of the upper surface is higher than the threshold temperature, it indicates that the knife head 220 has passed through the plastic liner 300, completed the pressure cutting and contacted the surface of the pressure table 130. The retreat controller controls the cutting driving mechanism 210 to drive the knife head 220 to move upwards and gradually away from the pressure table 130 until it returns to the initial position after judging.
[0055] In order to protect the pressure table 130 and the thermal sensor 132, the pressure table 130 is further provided with a backing plate 131 covering the upper side of the pressure table 130 and the thermal sensor 132. The backing plate 131 should have high hardness to provide support for the sample during cutting and should also have certain flexibility to protect the knife head 220. The material of the backing plate 131 can be polyurethane, nitrile rubber, butadiene rubber, thermoplastic elastomer and polycarbonate.
[0056] Further, since the knife head 220 moves upwards after completing the cutting action, the cut sample pieces may be moved upwards together with the knife head 220. The sample pieces will be left in the knife head 220 and need to be manually taken out, which increases the labor intensity and reduces the efficiency. The cutting assembly 200 of the embodiment is further provided with at least one ejection mechanism. The ejection mechanism includes a top rod 240 fixedly arranged on the movement path of the knife head 220. The top rod 240 is provided with a top head extending into the knife head 220 along the cutting feed direction of the knife head 220. The knife head 220 is provided with a top material channel penetrating upward and downward. The top material channel is used for the top rod 240 to pass through the knife head 220.
[0057] During the upward movement of the knife head 220, the top head of the top rod 240 gradually extends into the top material channel of the knife head 220 until it passes through the knife head 220 and contacts the sample pieces and ejects the sample pieces, so as to ensure that the sample pieces are separated from the knife head 220.
[0058] The number of the ejector rods 240 corresponds to the number of the cutter heads 220, the upper end of the ejector rod 240 is fixed to the top plate 150, the lower end of the ejector rod 240 is provided with a top head, the top rod channel is arranged on the top of the cutter head 220, the lower end of the ejector rod 240 passes through the top rod channel from top to bottom and extends into the cutter head 220, so as to realize the ejection of the sample piece.
[0059] The use mode of the embodiment is as follows:
[0060] The plastic liner 300 is placed in the clamping gap 140, the pressing plate 120 is driven by the pressing drive mechanism 110 to move downward and apply pressure to the plastic liner 300, so that the plastic liner 300 is pressed flat; the cutter head 220 is heated by the heating device 230, the temperature detector monitors the temperature of the cutter head 220 and feeds back the temperature signal to the temperature controller, the temperature controller controls the heating temperature of the heating device 230, so that the temperature of the cutter head 220 is maintained within a range; the cutter head 220 is driven by the cutting drive mechanism 210 to move downward until it passes through the cutting groove 121, the plastic liner 300 is cut and a sample piece is obtained; the temperature signal of the pressing table 130 is transmitted to the ejector controller by the thermal sensor 132, the ejector controller controls the cutter head 220 to move upward to the initial position by the cutting drive mechanism 210, in the process, the sample piece is ejected by the ejector rod 240 passing through the cutter head 220, and the automatic separation of the sample piece is completed.
[0061] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the 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.
[0062] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model.
Claims
1. A sample preparation device for a plastic liner of a hydrogen cylinder, characterized by, The device comprises: a flattening assembly, including a flattening driving mechanism, a pressing plate and a pressing table, the pressing plate and the pressing table are arranged in a parallel manner, forming a clamping gap between the pressing plate and the pressing table, the flattening driving mechanism is used to drive the pressing plate and the pressing table to move closer to or away from each other, the pressing plate is provided with at least one hollow cutting slot; a cutting assembly, including a cutting driving mechanism and at least one cutter head, the cutter head is provided with a heating device for heating the cutter head, at least one cutter head is arranged on the side of the pressing plate away from the pressing table, at least one cutter head corresponds to at least one cutting slot, the cutting driving mechanism is in transmission connection with at least one cutter head, and the cutting driving mechanism is used to drive at least one cutter head to pass through the cutting slot to extend into the clamping gap.
2. The sample preparation device according to claim 1, wherein: a top plate is arranged on the side of the pressing table away from the pressing plate, a plurality of support rods are connected between the top plate and the pressing table, the pressing plate is arranged between the top plate and the pressing table, the pressing plate is provided with a plurality of sliding guide structures in sliding cooperation with the plurality of support rods, and the flattening driving mechanism is in transmission connection with the pressing plate.
3. The sample preparation device according to claim 2, wherein: the flattening driving mechanism comprises a plurality of pressing plate driving units, the plurality of pressing plate driving units are installed on the top plate, and the driving ends of the plurality of pressing plate driving units are respectively connected to the center and the periphery of the pressing plate.
4. The sample preparation device according to claim 1, wherein: the cutting assembly further comprises at least one temperature detector and a temperature controller, the at least one temperature detector is used to detect the temperature of the cutter head, the temperature controller is connected with the heating device and the temperature detector respectively, and the temperature controller is configured to receive the temperature signal of the at least one temperature detector to control the heating temperature of the cutter head by the heating device.
5. The sample preparation device according to claim 1, wherein: the pressing table is provided with a thermal sensor and a cutter head reset controller, the thermal sensor is used to detect the temperature of the pressing table, the cutter head reset controller is connected with the thermal sensor and the cutting driving mechanism respectively, and the cutter head reset controller is configured to receive the temperature signal of the thermal sensor to control the cutting driving mechanism to reset the cutter head.
6. The sample preparation device according to claim 1, wherein: the cutter head is a sleeve cutter.
7. The sample preparation device according to claim 6, wherein: the cutting assembly further comprises at least one ejecting mechanism, the at least one ejecting mechanism comprises an ejecting rod fixedly arranged on the cutting movement path of the cutter head, and the ejecting rod is provided with an ejecting head extending into the cutter head in the cutting feed direction of the cutter head.
8. The sample preparation device according to claim 7, wherein: the cutter head is provided with a material ejecting channel, and the material ejecting channel is used for the ejecting rod to pass through the cutter head.
9. The sample preparation device according to claim 6, wherein: the cutter head is detachably connected with the cutting driving mechanism through a quick release structure.
10. The sample preparation apparatus of claim 1, wherein: a side of the press table facing the press plate is provided with a backing plate.