An automated detection system and method for butterfly-shaped gas cylinder processing technology

Abstract

The present application discloses an automated detection system and method for butterfly gas cylinder processing technology, belonging to the field of butterfly gas cylinder detection technology. The automated detection system includes a clamping unit for fixing the inner liner of the butterfly gas cylinder, a pressure detection unit, a temperature detection unit and a pressure regulating unit. The automated detection method uses the automated detection system. The pressure sensor of the pressure detection unit is arranged at different positions of the inner liner of the butterfly gas cylinder to realize real-time monitoring of the pressure at different positions. When the pressure difference between the external pressure and the internal pressure of the inner liner of the butterfly gas cylinder exceeds a certain range, the pressure of the inner liner of the butterfly gas cylinder is timely adjusted through the gas channel of the clamping unit by the pressure regulating unit, so that the pressure difference between the external pressure and the internal pressure of the inner liner of the butterfly gas cylinder is kept within a reasonable range, so that the internal and external pressures of the thin-walled butterfly gas cylinder liner are kept in dynamic balance at any same time or any same period during the winding process and the high-temperature curing stage.

Description

Technical Field

[0001] The present application relates to an automated detection system and method for a butterfly-shaped gas cylinder processing technology, and belongs to the technical field of butterfly-shaped gas cylinder detection. Background Art

[0002] The butterfly-shaped gas cylinder is a hollow storage device. In the production process of the butterfly-shaped gas cylinder, it is necessary to wind carbon fiber tows on the outside of the butterfly-shaped gas cylinder liner, prepare a fiber preform structure through two-dimensional winding, and then form the gas cylinder through thermal curing.

[0003] Since the butterfly cylinder liner is a thin-walled structure, in the traditional process of winding carbon fiber bundles, the composite material exerts a certain tension on the butterfly cylinder liner during winding, which causes the butterfly cylinder liner to deform, making it impossible to continue winding the composite material, and the deformed butterfly cylinder liner does not meet the requirements for processing, seriously affecting subsequent production. In addition, in the process of winding the composite material on the outside of the butterfly cylinder liner, due to the different winding angles, speeds and times, as well as the thickness and shape of the butterfly cylinder liner itself, the butterfly cylinder liner is locally deformed, causing micro-defects or local stress concentration in the butterfly cylinder liner, and it is impossible to ensure the dynamic balance between the internal pressure of the butterfly cylinder liner and the external pressure exerted on it by the composite material, it is impossible to ensure that the butterfly cylinder liner and the composite material are always in good coordination, and it is impossible to ensure that the composite material can maintain a balanced pressure with the butterfly cylinder liner at all the winding positions. Furthermore, during the thermal curing process, the change in the shrinkage strength of the carbon fiber applies external pressure to the already wound butterfly cylinder for a second time, which will further cause the container to become unstable and cause the butterfly cylinder to suffer a second pressure damage. Summary of the invention

[0004] The present application proposes an automated detection system and method for the processing technology of a butterfly gas cylinder to solve the above-mentioned problems that in the process of wrapping a composite material around the outside of the butterfly gas cylinder liner, a dynamic balance cannot be ensured between the internal pressure of the butterfly gas cylinder liner and the external pressure exerted on it by the composite material, and a good fit cannot be ensured between the butterfly gas cylinder liner and the composite material at all times; and when the butterfly gas cylinder liner is cured at high temperature after being wrapped with the composite material, a dynamic balance cannot be ensured between the internal pressure of the butterfly gas cylinder liner and the external pressure exerted on the butterfly gas cylinder liner by the composite material.

[0005] According to one aspect of the present application, an automated detection system for a butterfly-shaped gas cylinder processing technology is provided, comprising:

[0006] A clamping unit, comprising a first clamping mechanism and a second clamping mechanism for clamping a butterfly-shaped gas cylinder liner, wherein the first end of the first clamping mechanism has a gas passage communicating with the butterfly-shaped gas cylinder liner, and the first end of the first clamping mechanism can be inserted into and block a material port of the butterfly-shaped gas cylinder liner;

[0007] The pressure detection unit includes a first pressure detection unit and a second pressure detection unit, wherein the first pressure detection unit includes at least two pressure sensors, and the pressure sensors are arranged at different positions of the butterfly-shaped gas cylinder liner, and are used to detect the pressure difference between the external pressure and the internal pressure of the butterfly-shaped gas cylinder liner; the second pressure detection unit is arranged inside the butterfly-shaped gas cylinder liner and does not contact the inner wall of the butterfly-shaped gas cylinder liner, and the second pressure detection unit is used to detect the internal gas pressure of the butterfly-shaped gas cylinder liner;

[0008] A temperature detection unit, comprising an internal temperature sensor for measuring the internal temperature of the inner liner of the butterfly-shaped gas cylinder and an external temperature sensor for measuring the peripheral temperature of the butterfly-shaped gas cylinder;

[0009] A pressure regulating unit receives the pressure difference signal transmitted by the pressure sensor, and adjusts the pressure of the butterfly cylinder liner through the gas channel according to the pressure difference signal, so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance; and / or receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly cylinder liner is in an ascending stage, a stable stage or a descending stage, and then determines the magnitude of the internal pressure of the butterfly cylinder liner and the external pressure of the butterfly cylinder liner, and directionally adjusts the pressure of the butterfly cylinder liner, so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance.

[0010] The thickness of the thin-walled butterfly gas cylinder lining has a trend of becoming thinner and thinner. In the future, the thickness of the thin-walled butterfly gas cylinder lining made of alloy material will be even smaller to meet the demand for lightweight. During the process of winding the composite material, the thin-walled butterfly gas cylinder lining will be subjected to the pressure of the composite material and the shrinkage of the composite material during the high-temperature curing stage, which will cause the pressure on the thin-walled butterfly gas cylinder lining to increase, which will cause local micro-deformation of the thin-walled butterfly gas cylinder lining. The existence of local micro-deformation will further lead to local defects in the thin-walled butterfly gas cylinder, especially in the later use process, which will make the original local defect position of the thin-walled butterfly gas cylinder lining become a weak point, thereby affecting the service life of the thin-walled butterfly gas cylinder lining. Therefore, the automated detection system of the present application monitors the pressure difference between the external pressure and the internal pressure of the butterfly gas cylinder liner in real time during the entire butterfly gas cylinder processing process. When the pressure difference exceeds a certain range, the internal pressure of the butterfly gas cylinder liner is adjusted in a timely and directional manner, so that the thin-walled butterfly gas cylinder liner maintains dynamic balance during the entire winding and curing process, thereby solving the existence of micro-deformation, enhancing the strength of the butterfly gas cylinder liner, and improving the service life of the butterfly gas cylinder liner.

[0011] In one embodiment, the first end of the first clamping mechanism is provided with a support frame extending toward the interior of the butterfly-shaped gas cylinder liner, and the second pressure detection unit is installed on the support frame. Furthermore, the second pressure detection unit can be an instrument such as a vacuum gauge or a pressure sensor that can measure the internal pressure of the butterfly-shaped gas cylinder liner, and the maximum width of the support frame does not exceed the radial dimension of the material port of the butterfly-shaped gas cylinder liner, so that the support frame can smoothly extend to the interior of the butterfly-shaped gas cylinder liner.

[0012] In one embodiment, a plurality of pressure sensors are arranged at intervals along a winding path on the outer arc surface of the butterfly-shaped gas cylinder liner, and the pressure sensors are also arranged at the material port of the butterfly-shaped gas cylinder liner.

[0013] In one embodiment, the pressure regulating unit receives the pressure difference signal transmitted by the pressure sensor, and adjusts the pressure of the liner of the butterfly-shaped gas cylinder through the gas channel according to the pressure difference signal, so that the external pressure and the internal pressure of the liner of the butterfly-shaped gas cylinder are kept in dynamic balance, specifically including:

[0014] The pressure regulating unit includes an air pump and a controller. The controller receives the pressure difference signal transmitted by the pressure sensor, and determines the maximum pressure value among the pressures at different positions of the butterfly cylinder liner at any same time or any same period of time, and controls the air pump to adjust the pressure of the butterfly cylinder liner, so that a dynamic balance is maintained between the external pressure and the internal pressure of the butterfly cylinder liner.

[0015] In one embodiment, the receiving of the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and judging whether the internal temperature of the butterfly cylinder liner is in an ascending stage, a stable stage, or a descending stage, and then judging and comparing the internal pressure of the butterfly cylinder liner and the external pressure of the butterfly cylinder liner, and directionally adjusting the pressure of the butterfly cylinder liner so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance, specifically includes:

[0016] The pressure regulating unit includes an air pump and a controller, wherein the controller receives temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the inner liner of the butterfly gas cylinder is in an ascending stage, a stable stage or a descending stage.

[0017] When the temperature of the butterfly cylinder liner is in the rising stage, the internal pressure of the butterfly cylinder liner increases, and when the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner, the controller controls the air pump to reduce the pressure of the butterfly cylinder liner;

[0018] When the temperature of the inner liner of the butterfly-shaped gas cylinder is in a stable stage, the internal pressure of the inner liner of the butterfly-shaped gas cylinder remains unchanged, and the controller controls the air pump not to adjust the pressure of the inner liner of the butterfly-shaped gas cylinder;

[0019] When the temperature of the butterfly cylinder liner is in a decreasing stage, the internal pressure of the butterfly cylinder liner decreases. When the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner, the controller controls the air pump to increase the pressure of the butterfly cylinder liner.

[0020] In one embodiment, when the temperature of the butterfly-shaped gas cylinder liner is in the rising stage, the internal pressure of the butterfly-shaped gas cylinder liner increases. When the internal pressure of the butterfly-shaped gas cylinder liner is greater than the external pressure of the butterfly-shaped gas cylinder liner, the judgment method is:

[0021] The pressure sensor detects that the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner;

[0022] When the temperature of the butterfly cylinder liner is in the lower stage, the internal pressure of the butterfly cylinder liner decreases. When the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner, the judgment method is:

[0023] The pressure sensor detects that the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner gradually decreases to zero, then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner.

[0024] According to another aspect of the present application, an automated detection method for a butterfly-shaped gas cylinder processing technology is provided. The method uses the automated detection system for the butterfly-shaped gas cylinder processing technology described above, and includes the following steps:

[0025] S1. Clamp the butterfly-shaped cylinder liner between the first clamping mechanism and the second clamping mechanism of the clamping unit, set a plurality of pressure sensors on the butterfly-shaped cylinder liner along the winding path of the composite material, and pressurize the interior of the butterfly-shaped cylinder liner through a pressure regulating unit;

[0026] S2. The composite material is wound around the outer peripheral surface of the butterfly cylinder liner according to a preset winding path, and the pressure regulating unit obtains the pressure at different winding positions of the butterfly cylinder liner in real time according to the pressure sensor, and adjusts the internal pressure of the butterfly cylinder liner according to the maximum pressure value of the pressures at different winding positions at any same time or any same period during the winding process, so as to maintain a first dynamic balance between the external pressure applied by the composite material at different winding positions on the butterfly cylinder liner and the internal pressure of the butterfly cylinder liner during at least part or the entire winding process;

[0027] S3. When the butterfly-shaped gas cylinder liner wrapped with the composite material and the automated detection system of the butterfly-shaped gas cylinder processing technology are cured together according to the curing procedure, at least during the entire curing process, the pressure regulating unit receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly-shaped gas cylinder liner is in a rising stage, a stable stage or a falling stage, and then determines the internal pressure of the butterfly-shaped gas cylinder liner and the external pressure of the butterfly-shaped gas cylinder liner, and directionally adjusts the pressure of the butterfly-shaped gas cylinder liner so that a second dynamic balance is maintained between the external pressure and the internal pressure of the butterfly-shaped gas cylinder liner.

[0028] In one embodiment, the pressure regulating unit receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly cylinder liner is in an ascending stage, a stable stage, or a descending stage, and then determines the magnitude of the internal pressure of the butterfly cylinder liner and the external pressure of the butterfly cylinder liner, and directionally adjusts the pressure of the butterfly cylinder liner so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance, specifically including:

[0029] The pressure regulating unit includes an air pump and a controller, wherein the controller receives temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the inner liner of the butterfly gas cylinder is in an ascending stage, a stable stage or a descending stage.

[0030] When the temperature of the butterfly cylinder liner is in the rising stage, the internal pressure of the butterfly cylinder liner increases, and when the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner, the controller controls the air pump to reduce the pressure of the butterfly cylinder liner;

[0031] When the temperature of the inner liner of the butterfly-shaped gas cylinder is in a stable stage, the internal pressure of the inner liner of the butterfly-shaped gas cylinder remains unchanged, and the controller controls the air pump not to adjust the pressure of the inner liner of the butterfly-shaped gas cylinder;

[0032] When the temperature of the butterfly cylinder liner is in a decreasing stage, the internal pressure of the butterfly cylinder liner decreases. When the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner, the controller controls the air pump to increase the pressure of the butterfly cylinder liner.

[0033] In one embodiment, when the temperature of the butterfly-shaped gas cylinder liner is in the rising stage, the internal pressure of the butterfly-shaped gas cylinder liner increases. When the internal pressure of the butterfly-shaped gas cylinder liner is greater than the external pressure of the butterfly-shaped gas cylinder liner, the judgment method is:

[0034] The pressure sensor detects that the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner;

[0035] When the temperature of the butterfly cylinder liner is in the lower stage, the internal pressure of the butterfly cylinder liner decreases. When the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner, the judgment method is:

[0036] The pressure sensor detects that the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner gradually decreases to zero, then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner.

[0037] In one embodiment, in S1, the winding path is spirally wound along the inner liner of the butterfly-shaped gas cylinder; or,

[0038] The winding path is to perform circumferential winding at a preset winding angle along the first end section of the butterfly-shaped gas cylinder and then transition to longitudinal spiral winding at a preset winding angle along the second end section; or

[0039] The winding path is a process of longitudinally spirally winding along the first end section of the butterfly-shaped gas cylinder at a preset winding angle and then transitioning to circumferentially winding along the second end section at a preset winding angle.

[0040] The beneficial effects of this application include but are not limited to:

[0041] 1. The automated detection system for the processing technology of butterfly gas cylinders provided in the present application, during the entire processing technology of the butterfly gas cylinder, in order to ensure that the external pressure and the internal pressure of the liner of the butterfly gas cylinder are kept in dynamic balance, so as to avoid the existence of micro-deformation of the butterfly gas cylinder and strengthen the strength of the liner of the butterfly gas cylinder, the pressure sensor of the pressure detection unit is arranged at different positions of the liner of the butterfly gas cylinder to realize real-time monitoring of the pressure at different positions. When the pressure difference between the external pressure and the internal pressure of the liner of the butterfly gas cylinder exceeds a certain range, the pressure of the liner of the butterfly gas cylinder is timely adjusted through the gas channel of the clamping unit by the pressure regulating unit, so that the pressure difference between the external pressure and the internal pressure of the liner of the butterfly gas cylinder is kept within a reasonable range, so that the internal and external pressures of the thin-walled butterfly gas cylinder liner are kept in dynamic balance at any same time or any same period during the winding process, so as to avoid the occurrence of micro-deformation during the winding process of the composite material. Or the lining of the butterfly gas cylinder is deformed or produces local stress concentration during the curing process; after the winding process of the butterfly gas cylinder is completed, it is necessary to enter the high-temperature curing stage. The high-temperature curing stage usually includes a heating stage, a high-temperature curing stabilization stage and a cooling stage. As the temperature changes, the gas pressure of the lining of the butterfly gas cylinder may increase or decrease. Therefore, the pressure contribution value to the butterfly gas cylinder during the change process is uncertain. The pressure adjustment process may be pressurization or decompression. Therefore, in order to accurately perform directional pressure adjustment, a temperature detection unit is set up. The temperature values ​​detected by the internal temperature sensor and the external temperature sensor of the temperature detection unit are then judged and compared. The internal pressure of the lining of the butterfly gas cylinder and the external pressure of the lining of the butterfly gas cylinder are compared (the principle of thermal expansion and contraction), and the pressure of the lining of the butterfly gas cylinder is directionally adjusted so that a dynamic balance is maintained between the external pressure and the internal pressure of the lining of the butterfly gas cylinder.

[0042] 2. In the automated detection system for the butterfly gas cylinder processing technology provided in the present application, a support frame is extended and arranged inside the inner liner of the butterfly gas cylinder, and a second pressure detection unit is arranged on the support frame to avoid contact between the second pressure detection unit and the wall of the inner liner of the butterfly gas cylinder, so that the tested pressure value inside the inner liner of the butterfly gas cylinder is more accurate.

[0043] 3. The automated detection method for the butterfly-shaped gas cylinder processing technology provided in the present application adopts the aforementioned automated detection system, and the clamping unit and the pressure regulating unit are provided to pressurize the inside of the thin-walled butterfly-shaped gas cylinder liner, so that during the entire winding process, the pressure on the different winding positions of the thin-walled butterfly-shaped gas cylinder liner due to the pressure regulating unit at any same time or any same period of time during the winding process and the tension of the externally wound composite material on the thin-walled butterfly-shaped gas cylinder liner maintain a dynamic balance between the external pressure on the thin-walled butterfly-shaped gas cylinder liner; during the high-temperature curing stage of the butterfly-shaped gas cylinder, the butterfly-shaped gas cylinder The gas pressure of the liner may increase or decrease, so the pressure contribution value to the butterfly gas cylinder during the change process is uncertain, and the pressure adjustment process may be pressurization or decompression. Therefore, in order to accurately perform directional pressure adjustment, a temperature detection unit is set up, and the temperature values ​​detected by the internal temperature sensor and the external temperature sensor of the temperature detection unit are then judged and compared with the internal pressure of the butterfly gas cylinder liner and the external pressure of the butterfly gas cylinder liner (the principle of thermal expansion and contraction), and the pressure of the butterfly gas cylinder liner is directionally adjusted to maintain a dynamic balance between the external pressure and the internal pressure of the butterfly gas cylinder liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0045] Figure 1 This is a schematic diagram of the structure of an automated detection system for a butterfly-shaped gas cylinder processing technology of the present application;

[0046] Figure 2 for Figure 1 sectional view of;

[0047] Figure 3 A schematic diagram of the structure of a first clamping mechanism of a clamping unit in an implementation manner of an automated detection system for a butterfly-shaped gas cylinder processing process of the present application;

[0048] Figure 4 A schematic structural diagram of a first clamping mechanism of a clamping unit in another implementation manner of an automated detection system for a butterfly-shaped gas cylinder processing technology of the present application.

[0049] List of parts and reference numerals:

[0050] 1. Thin-wall butterfly-shaped cylinder lining;

[0051] 2 butterfly-shaped gas cylinder tooling, 21 first clamping mechanism, 211 first clamping rod, 212 first clamping plate, 2121 plate body, 2122 connector, 213 connecting pipe, 22 second clamping mechanism, 221 second clamping rod, 222 second clamping plate;

[0052] 3. Pressure sensor;

[0053] 4 air pump assembly, 41 air pump, 42 pressure detection element;

[0054] 5 composite material, 6 gas channel, 7 flange, 8 exhaust flow channel, 9 exhaust hole, 10 blocking nut, 11 material port, 12 sealing gasket, 13 mounting groove, 14 first gasket, 15 second gasket, 16 connecting hole, 17 support frame, 18 second pressure detection unit. DETAILED DESCRIPTION

[0055] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0056] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0057] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0061] The embodiment of the present application discloses an automated detection system for a butterfly-shaped gas cylinder processing process, comprising a clamping unit, a pressure detection unit, a temperature detection unit and a pressure regulating unit, wherein:

[0062] The clamping unit comprises a first clamping mechanism and a second clamping mechanism for clamping a butterfly-shaped gas cylinder liner, wherein the first end of the first clamping mechanism has a gas passage communicating with the butterfly-shaped gas cylinder liner, and the first end of the first clamping mechanism can be inserted into and block a material port of the butterfly-shaped gas cylinder liner;

[0063] The pressure detection unit includes a first pressure detection unit and a second pressure detection unit. The first pressure detection unit includes at least two pressure sensors, which are arranged at different positions of the butterfly-shaped gas cylinder liner and are used to detect the pressure difference between the external pressure and the internal pressure of the butterfly-shaped gas cylinder liner; the second pressure detection unit is arranged inside the butterfly-shaped gas cylinder liner and does not contact the inner wall of the butterfly-shaped gas cylinder liner, and the second pressure detection unit is used to detect the internal gas pressure of the butterfly-shaped gas cylinder liner;

[0064] The temperature detection unit includes an internal temperature sensor for measuring the internal temperature of the liner of the butterfly-shaped gas cylinder and an external temperature sensor for measuring the peripheral temperature of the butterfly-shaped gas cylinder;

[0065] The pressure regulating unit receives the pressure difference signal transmitted by the pressure sensor, and adjusts the pressure of the butterfly cylinder liner through the gas channel according to the pressure difference signal, so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance; and / or, the pressure regulating unit receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly cylinder liner is in an ascending stage, a stable stage or a descending stage, and then determines and compares the internal pressure of the butterfly cylinder liner with the external pressure of the butterfly cylinder liner, and directionally adjusts the pressure of the butterfly cylinder liner, so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance.

[0066] As an embodiment, the first pressure detection unit is provided with a plurality of pressure sensors, and the plurality of pressure sensors are arranged at intervals along a winding path on the outer arc surface of the butterfly-shaped gas cylinder liner, and the pressure sensors are also arranged at the material port of the butterfly-shaped gas cylinder liner. The purpose of the pressure sensor is to obtain the pressure of the butterfly cylinder liner at different winding positions in real time. Because the butterfly cylinder liner is an elliptical structure, the pressure of the butterfly cylinder liner at different positions is different due to the different winding angles, winding speeds and winding directions. During the entire dynamic winding process, the pressure of the butterfly cylinder liner is in real-time dynamic change. The present application solves how to achieve a dynamic balance between the internal pressure of the butterfly cylinder liner at different winding positions at any same time or any same period during the winding process and the external pressure exerted on the butterfly cylinder liner by the wound composite material. Therefore, multiple pressure sensors are set to detect the pressure values ​​on the butterfly cylinder liner at different positions in real time. According to the obtained pressure value, the pressure regulating unit timely transports gas to the inside of the butterfly cylinder liner through the gas channel of the clamping unit, and timely adjusts the pressure, so as to always maintain the dynamic balance between the internal and external pressures of the butterfly cylinder liner at any same time or any same period during the winding process, thereby ensuring that the butterfly cylinder liner is always in a stable pressure state without imbalance or even deformation.

[0067] It is worth noting that the internal pressure in the butterfly cylinder liner is evenly distributed. Since the winding angles, winding times and winding directions of the composite materials at different positions are different, the external forces at different positions outside the butterfly cylinder liner are different. Therefore, in order to ensure that the butterfly cylinder liner will not be affected by imbalance or even deformation under the action of the maximum external force, it is necessary to determine the required inflation volume based on the maximum pressure value obtained by comparing the various pressure values ​​measured by the pressure sensor, and then pressurize the gas pumped into the interior of the butterfly cylinder liner through the pressure regulating unit.

[0068] Furthermore, how to set multiple pressure sensors on the butterfly cylinder liner along the winding path of the composite material can be implemented in a variety of ways. For example, as a preferred implementation, multiple pressure sensors can be attached to the outer surface of the butterfly cylinder liner along the winding path; as another implementation, multiple pressure sensors can be embedded in the butterfly cylinder liner or mounted on the outer peripheral surface of the butterfly cylinder liner; when the pressure sensor is installed in the butterfly cylinder liner in an embedded manner, a slightly concave mounting groove can be opened on the outer surface of the butterfly cylinder liner, so that the butterfly cylinder liner carries the pressure sensor and the pressure sensor The device can contact the composite material so as to detect the pressure applied by the composite material; it is worth noting here that the opening of the slightly concave installation groove cannot affect the strength of the butterfly cylinder liner to avoid the butterfly cylinder liner being unable to withstand a large pressure. The pressure impact on the butterfly cylinder liner should be as small as possible to avoid deformation or use defects during winding or curing and subsequent use; as a third embodiment, a plurality of pressure sensors can be installed in the adhesive layer, and the adhesive layer is between the composite material and the butterfly cylinder liner, so the composite material can be contacted to detect the pressure applied by the composite material to the butterfly cylinder liner.

[0069] Composite materials have excellent characteristics such as high strength, high modulus, high stiffness, excellent vibration damping, fatigue resistance and corrosion resistance. The composite materials mentioned in this application can be a single or mixed fiber with a thermosetting resin bound to the surface; wherein the single fiber with a thermosetting resin bound to the surface is flowable at room temperature, and the surface of the tow is infiltrated with a thermosetting resin, so the surface of the tow is flowable in a viscous state, and after winding and curing, the state changes to a solid structure after high-temperature curing. The mixed fiber can be, but is not limited to, the following, such as carbon fiber, PBO fiber, aromatic polyamine fiber and ultra-high molecular weight polyethylene fiber.

[0070] As an embodiment, the pressure regulating unit includes an air pump and a controller, wherein the controller receives the pressure difference signal transmitted by the pressure sensor, and determines the maximum pressure value among the pressures at different positions of the butterfly cylinder liner at any same time or any same period, and controls the air pump to adjust the pressure of the butterfly cylinder liner, so that a dynamic balance is maintained between the external pressure and the internal pressure of the butterfly cylinder liner.

[0071] Furthermore, in the pressure values ​​at different winding positions at any same time or any same period in the process of the composite material being wound to form a butterfly-shaped gas cylinder, the any same time may refer to a transient moment. For example, at the third second, the pressure value at the winding position may be measured by three pressure sensors, and the pressure values ​​between the three sensors may be compared to select the maximum pressure value. According to the maximum pressure value, the pressure mechanism may be controlled to adjust the pressure inside the liner of the butterfly-shaped gas cylinder, so as to achieve the balance of the internal and external pressures of the liner of the butterfly-shaped gas cylinder at any same time or any same period in the winding process; wherein any same period may be A time period within a few seconds, for example, by measuring the pressure value of the butterfly cylinder liner through three pressure sensors within three seconds, the specific measurement method is similar to the above and will not be described in detail; the controller controls the air pump to adjust the pressure inside the butterfly cylinder liner through the maximum pressure value among the pressures received, and the pressure adjustment process is not only pressurization but also possible decompression, because the butterfly cylinder liner will have a basic pressure in the initial stage of winding, but as the temperature rises, the internal gas pressure will also change, and the change process has an uncertain contribution value to the pressure of the butterfly cylinder liner. Therefore, it may be slightly larger than the external pressure, so it may be decompressed.

[0072] How to achieve directional pressure regulation inside the liner of the butterfly gas cylinder is a major problem solved by the present invention. After the winding process of the butterfly gas cylinder is completed, it is necessary to enter the high-temperature curing stage. The high-temperature curing stage includes a heating stage, a high-temperature curing stabilization stage and a cooling stage. As the temperature changes, the internal gas pressure of the liner of the butterfly gas cylinder may increase or decrease. The following takes this stage as an example to illustrate how to achieve directional pressure regulation.

[0073] The pressure regulating unit includes an air pump and a controller, which are electrically connected. The controller receives temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the liner of the butterfly gas cylinder is in an ascending stage, a stable stage or a descending stage.

[0074] When the temperature detected by the internal temperature sensor is lower than the temperature detected by the external temperature sensor, it is determined that the temperature of the liner of the butterfly gas cylinder is in the rising stage, that is, the temperature rising stage, and the internal pressure of the liner of the butterfly gas cylinder increases. When the internal pressure of the liner of the butterfly gas cylinder is greater than the external pressure of the liner of the butterfly gas cylinder, the controller controls the air pump to reduce the pressure of the liner of the butterfly gas cylinder. Further, when the temperature of the liner of the butterfly gas cylinder is in the rising stage, the internal pressure of the liner of the butterfly gas cylinder increases. When the internal pressure of the liner of the butterfly gas cylinder is greater than the external pressure of the liner of the butterfly gas cylinder, the judgment method is: the pressure difference value detected by the pressure sensor between the external pressure and the internal pressure of the liner of the butterfly gas cylinder gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the liner of the butterfly gas cylinder is greater than the external pressure of the liner of the butterfly gas cylinder.

[0075] When the temperature of the butterfly-shaped gas cylinder liner is in a stable stage, that is, a high-temperature curing stable stage, which is a constant temperature stage under a high-temperature environment, the internal pressure of the butterfly-shaped gas cylinder liner is relatively unchanged or controlled within a certain range, and the controller does not need to control the air pump to regulate the pressure of the butterfly-shaped gas cylinder liner.

[0076] When the temperature detected by the internal temperature sensor is higher than the temperature detected by the external temperature sensor, it is determined that the temperature of the liner of the butterfly gas cylinder is in a descending stage, i.e., a cooling stage, and the internal pressure of the liner of the butterfly gas cylinder gradually decreases. When the internal pressure of the liner of the butterfly gas cylinder is less than the external pressure of the liner of the butterfly gas cylinder, the controller controls the air pump to increase the pressure of the liner of the butterfly gas cylinder. Further, when the temperature of the liner of the butterfly gas cylinder is in a descending stage, the internal pressure of the liner of the butterfly gas cylinder decreases. When the internal pressure of the liner of the butterfly gas cylinder is less than the external pressure of the liner of the butterfly gas cylinder, the judgment method is: the pressure difference value detected by the pressure sensor between the external pressure and the internal pressure of the liner of the butterfly gas cylinder gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the liner of the butterfly gas cylinder is less than the external pressure of the liner of the butterfly gas cylinder.

[0077] It should be noted here that after the winding process of the butterfly cylinder is completed and before entering the high-temperature curing stage, the interior of the butterfly cylinder liner has a certain basic pressure, and the internal pressure and external pressure of the butterfly cylinder liner are controlled within a certain range. After entering the high-temperature curing stage, the composite material wrapped around the outer periphery of the butterfly cylinder liner will expand and contract with the change of temperature, thus generating different pressures on the butterfly cylinder liner, which may be greater than or less than the internal pressure of the butterfly cylinder liner. It can be determined whether the interior of the butterfly cylinder liner is pressurized or depressurized based on the temperature change inside the butterfly cylinder liner and the change in the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner detected by the pressure sensor.

[0078] It should be noted that during the processing of the composite material to form a butterfly gas cylinder in the winding stage or before entering the high-temperature curing stage after the winding process of the butterfly gas cylinder is completed, the internal pressure and external pressure of the butterfly gas cylinder liner are controlled within a certain range, which means that the internal and external pressure difference of the butterfly gas cylinder liner will not cause microscopic defects (for example, micron-level cracks) to the liner and / or the composite material within the pressure range; as an implementation method, it can even be set to less than 0.30-0.85 times the aforementioned pressure range, thereby reserving a sufficient safety threshold.

[0079] After the winding process of the butterfly cylinder is completed, it enters the high-temperature curing stage. Furthermore, in this stage, the butterfly cylinder liner of the wound composite material and the automatic detection system of the entire butterfly cylinder processing process are cured together according to the curing procedure. The butterfly cylinder liner of the wound composite material and the automatic detection system can be put into the curing furnace for curing. During the curing process, the pressure of the butterfly cylinder liner is adjusted at least during the entire curing period, and at any same time, such as a few seconds, or any same period, such as within a few seconds; for example, at the third second, by using 3 pressure sensors to detect the pressure at different winding positions of the butterfly cylinder liner, the maximum pressure value among the 3 pressure values ​​is obtained, and the pressure of the butterfly cylinder liner is adjusted according to this maximum pressure value. The pressure adjustment can be pressurization or decompression, and the purpose is to ensure that the external pressure applied by the composite material to the butterfly cylinder liner at any same time or any same period of time during the winding process and the internal pressure of the butterfly cylinder liner are maintained at a second dynamic balance.

[0080] The second dynamic balance can be set to a pressure range in which the internal and external pressure difference to which the lining of the butterfly gas cylinder is subjected during the curing process will not cause microscopic defects (e.g., micron-level cracks) in the lining and / or composite material; it can even be set to less than 0.25-0.75 times the aforementioned pressure range, thereby reserving a sufficient safety threshold.

[0081] Realizing the second dynamic steady-state balance through the automated detection system of the butterfly gas cylinder processing technology is beneficial to the dynamic stress-strain balance of the butterfly gas cylinder lining and the composite material at the microscopic level, and greatly reduces the occurrence of micro defects or local stress concentration in the winding process and / or the curing process, so that the prepared butterfly gas cylinder has a good overall force effect, improves the fit between the lining and the carbon fiber composite material layer, and improves the long-term service life.

[0082] In another embodiment, an automated detection method for a butterfly-shaped gas cylinder processing technology is provided, using the aforementioned automated detection system for the butterfly-shaped gas cylinder processing technology, the detection method comprising the following steps:

[0083] S1. Clamp the butterfly-shaped cylinder liner between the first clamping mechanism and the second clamping mechanism of the clamping unit, set a plurality of pressure sensors on the butterfly-shaped cylinder liner along the winding path of the composite material, and pressurize the interior of the butterfly-shaped cylinder liner through a pressure regulating unit;

[0084] S2. The composite material is wound around the outer peripheral surface of the butterfly cylinder liner according to a preset winding path, and the pressure regulating unit obtains the pressure at different winding positions of the butterfly cylinder liner in real time according to the pressure sensor, and adjusts the internal pressure of the butterfly cylinder liner according to the maximum pressure value of the pressures at different winding positions at any same time or any same period during the winding process, so as to maintain a first dynamic balance between the external pressure applied by the composite material at different winding positions on the butterfly cylinder liner and the internal pressure of the butterfly cylinder liner during at least part or the entire winding process;

[0085] S3. When the butterfly-shaped gas cylinder liner wrapped with the composite material and the automated detection system of the butterfly-shaped gas cylinder processing technology are cured together according to the curing procedure, at least during the entire curing process, the pressure regulating unit receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly-shaped gas cylinder liner is in a rising stage, a stable stage or a falling stage, and then determines and compares the internal pressure of the butterfly-shaped gas cylinder liner with the external pressure of the butterfly-shaped gas cylinder liner, and directionally adjusts the pressure of the butterfly-shaped gas cylinder liner so that a second dynamic balance is maintained between the external pressure and the internal pressure of the butterfly-shaped gas cylinder liner.

[0086] As a preferred embodiment, in the step S1, the winding path can select any one of the following embodiments: as one preferred embodiment, the winding path is spirally wound along the butterfly-shaped gas cylinder liner 1; as another preferred embodiment, the winding path is circumferentially wound along the first head section of the butterfly-shaped gas cylinder at a preset winding angle and then transitioned to the second head section for longitudinal spiral winding at a preset winding angle; the butterfly-shaped gas cylinder liner 1 can be an integral structure; a three-section connected structure can also be provided, wherein the butterfly-shaped gas cylinder liner 1 includes a first head section, a barrel section, and a second head section connected in sequence; in this embodiment, as Figure 1 As shown, the butterfly-shaped gas cylinder liner 1 includes a first head section, a barrel section and a second head section connected in sequence from top to bottom; the first head section and the second head section are arranged as a symmetrical structure with the barrel section as the center, and the composite material 5 is wound circumferentially at a preset angle through the first head section, passes through the barrel section, and then transitions to the position of the second head section and is then wound in a longitudinal spiral winding manner.

[0087] When the composite material 5 is wound along the winding path on the outside of the butterfly-shaped gas cylinder liner 1, S-shaped winding is performed at the position of the surface of the butterfly-shaped gas cylinder liner 1 corresponding to the flange 7. The purpose of S-shaped winding at the position of the flange 7 is to form a reinforcement layer.

[0088] In this embodiment, a structure of a clamping unit is provided, wherein the butterfly clamping unit 2 includes a first clamping mechanism 21 and a second clamping mechanism 22 for clamping a butterfly-shaped gas cylinder liner 1; the first end of the first clamping mechanism 21 has a gas channel 6 connected to the butterfly-shaped gas cylinder liner 1, and the air pump assembly 4 pressurizes the interior of the butterfly-shaped gas cylinder liner 1 through the gas channel 6; the first end of the first clamping mechanism 21 can be inserted into and seal the material port 11 described below.

[0089] The butterfly-shaped gas cylinder liner 1 is provided with a material port 11; the pressure sensor 3 is also arranged at the material port 11 of the butterfly-shaped gas cylinder liner 1. A sealing gasket 12 is arranged outside the material port 11, and the sealing gasket 912 is located between the first clamping plate 212 and the material port 11. The sealing gasket 12 is sleeved outside the material port 11 to enhance the sealing between the material port 11 and the first clamping plate 212, and prevent gas from leaking from between the material port 11 and the first clamping plate 212.

[0090] The connecting pipe 213 of the first clamping mechanism 21 is inserted into the interior of the material port 11, and the first clamping plate 212 of the first clamping mechanism 21 abuts against the outer wall of the butterfly-shaped gas cylinder liner 1 to seal the material port 11. The first clamping rod 211 of the first clamping mechanism 21 is located on the outside of the butterfly-shaped gas cylinder liner 1 and is connected to the air pump 4. The first base supports the first clamping rod 211, the first clamping plate 212 and the connecting pipe 213.

[0091] By setting the material port 11 described below, the first clamping mechanism 21 is connected to the butterfly gas cylinder liner 1 and the gas channel 6 is connected to the butterfly gas cylinder liner 1. The air pump assembly 4 can pump the gas directly into the interior of the butterfly gas cylinder through the gas channel 6.

[0092] The first clamping mechanism 21 includes a first clamping rod 211, a first clamping plate 212 and a connecting pipe 213 connected in sequence along the clamping direction; one end of the first clamping rod 211 is connected to one end of the first clamping plate 212, and the connecting pipe 213 is connected to the other end of the first clamping plate 212; an air passage is provided on one side of the first clamping rod 211 facing the connecting pipe 213, a flow hole is provided inside the first clamping plate 212, the flow hole passes through the first clamping plate 212, the connecting pipe 213 is a hollow tubular structure, and the air passage is connected to the flow hole and the inside of the connecting pipe 213 to form a gas passage 6. When in use, the connecting pipe 213 is inserted into the material port 11 described below of the butterfly-shaped gas cylinder liner 1, and the first clamping plate 212 is fitted with the outer surface of the butterfly-shaped gas cylinder liner 1. The air pump assembly 4 is connected to the gas channel 6 of the first clamping rod 211 , and the gas enters the interior of the butterfly-shaped gas cylinder liner 1 through the gas channel 6 and the connecting pipe 213 , thereby enabling the air pump assembly 4 to pump gas into the interior of the butterfly-shaped gas cylinder liner 1 .

[0093] The first clamping rod 211 is also supported on a horizontal surface such as the ground or a workbench through a first base.

[0094] The side where the first clamping plate 212 is connected to the first clamping rod 211 is perpendicular to the extension direction of the first clamping plate 212. The side of the first clamping plate 212 away from the first clamping rod 211 has an arc-shaped groove, and the arc surface of the arc-shaped groove is adapted to the outer arc surface shape of the butterfly-shaped gas cylinder liner 1 so as to fit the first clamping plate 212 to the outer surface of the butterfly-shaped gas cylinder liner 1.

[0095] The second clamping mechanism 22 includes a second clamping rod 221 and a second clamping plate 222 connected in sequence along the clamping direction. The second clamping rod 221 is supported on a horizontal surface such as the ground or a workbench through a second base, and the first clamping plate 212 and the second clamping plate 222 have the same structure and the first clamping plate 212 and the second clamping plate 222 symmetrically clamp the outer peripheral surface of the butterfly-shaped gas cylinder liner 1.

[0096] The connection method between the first clamping rod 211 and the first clamping plate 212 is not limited by this embodiment, and any of the following methods may be used:

[0097] Embodiment 1: The first clamping rod 211 and the first clamping plate 212 are fixedly connected to form an integrated structure. An air passage is provided inside the first clamping rod 211, and a connecting hole is provided inside the first clamping plate 212. The air passage, the connecting hole and the connecting pipe 213 are connected to form a gas channel 6.

[0098] Embodiment 2: The first clamping rod 211 and the first clamping plate 212 are detachably connected. The first clamping plate 212 includes a plate body 2121 and a connector 2122 connected to each other; the plate body 2121 is fixedly connected to the connecting pipe 213; the connector 2122 has a fixed end and a connecting end, the outer portion of the connecting end is provided with an external thread, the fixed end is vertically connected to the plate body 2121, the interior of the plate body 2121 is provided with a first connecting hole along the axial direction, the interior of the connector 2122 is provided with a second connecting hole along the axial direction, the first connecting hole is connected to the second connecting hole to form a flow hole, the flow hole is connected to the airway of the first clamping rod 211 and the interior of the connecting pipe 213 to form a gas channel 6, so that the gas enters the butterfly cylinder liner 1 through the gas channel 6.

[0099] The air passage at the first end of the first clamping rod 211 has an internal thread that matches the connecting end, and the detachable connection between the first clamping rod 211 and the first clamping plate 212 is achieved through the cooperation of the external thread at the connecting end and the internal thread at the first end of the first clamping rod 211.

[0100] A first gasket 14 is also connected between the first end of the first clamping rod 211 and the first clamping plate 212 to increase the sealing of the connection between the first end of the first clamping rod 211 and the first clamping plate 212 and prevent gas from leaking through the gap between the gas channel 6 at the first end of the first clamping rod 211 and the first clamping plate 212.

[0101] A flange 7 is also provided on the outside of the connection end; an exhaust flow channel 8 is provided inside the flange 7, and an exhaust hole 9 connected to the exhaust flow channel 8 is provided on the end face of the flange 7, and one end of the exhaust flow channel 8 away from the exhaust hole 9 is connected to the gas channel 6. Under normal circumstances, the exhaust hole 9 is blocked by a plugging nut 10. When pressure relief is required, the plugging nut 10 is opened, and the gas enters the exhaust flow channel 8 through the gas channel 6, and the gas is discharged to the outside through the exhaust hole 9 along the exhaust flow channel 8.

[0102] A second gasket 15 is provided between the exhaust hole 9 and the sealing nut 10 to improve the air tightness at the contact point between the first clamping plate 212 and the butterfly-shaped gas cylinder liner 1, thereby further improving the stability of the internal pressure of the butterfly-shaped gas cylinder liner 1 during the carbon fiber winding process.

[0103] The air pump assembly 4 includes an air pump 41 and a pressure detection element 42 for detecting the pressure of the air pump 41; the air outlet of the air pump 41 is connected to an air pipe, which is connected to the air channel 6 through the air pipe. The pressure detection element 42 can be a pressure sensor 3 or a pressure gauge, which is used to detect or display the pressure value in the air pipe, and judge whether there is a leakage or insufficient air pressure in the air pipe according to the pressure value, to ensure that the air pressure inside the butterfly cylinder liner 1 meets the requirements, and cooperate with the multiple pressure sensors 3 distributed along the winding path in the butterfly cylinder liner 1 to ensure that the internal air pressure and the external air pressure of the butterfly cylinder liner 1 are kept in a stable state, so as to achieve a dynamic balance between the internal pressure of the butterfly cylinder liner 1 and the external pressure applied to the butterfly cylinder liner 1 by the composite material 5.

[0104] In another embodiment, if Figure 4 As shown, the first end of the first clamping mechanism 21 is provided with a support frame 17 extending toward the interior of the butterfly gas cylinder liner, and the second pressure detection unit 18 is installed on the support frame 17 to prevent the second pressure detection unit 18 from contacting the wall of the butterfly gas cylinder liner 1, so that the tested pressure value inside the butterfly gas cylinder liner 1 is more accurate. The second pressure detection unit 18 can be a vacuum gauge, a pressure sensor or other instrument that can measure the internal pressure of the butterfly gas cylinder liner. The maximum width of the support frame 17 does not exceed the radial dimension of the material port of the butterfly gas cylinder liner 1, so that the support frame 17 can smoothly extend to the interior of the butterfly gas cylinder liner 1.

[0105] The present application also relates to a butterfly-shaped gas cylinder liner, comprising a liner body; a plurality of pressure sensors 3 are arranged at intervals along a winding path on the outer arc surface of the liner body; a material port 11 is opened on the liner body; and the pressure sensor 3 is also arranged at the material port of the butterfly-shaped gas cylinder liner 1.

[0106] As a preferred embodiment, mounting grooves 13 for embedding the pressure sensor 3 are provided on the lining body, and the mounting grooves 13 are distributed at intervals along the winding path.

[0107] The mounting groove 13 is adapted to the shape of the pressure sensor 3, and the height dimension of the mounting groove 13 needs to be satisfied so that after the pressure sensor 3 is installed in the mounting groove 13, the outer surface of the pressure sensor 3 can just contact the composite material 5. The purpose of such a setting is that during the winding process of the composite material 5, the composite material 5 contacts the pressure sensor 3, and the pressure sensor 3 monitors the tension of the composite material 5 in real time, and obtains the pressure difference between the inside and outside of the butterfly gas cylinder liner 1, and can accurately control the amount of air filled into the butterfly gas cylinder liner 1 by the air pump 41, thereby ensuring the first dynamic balance between the internal pressure of the butterfly gas cylinder liner 1 at different winding positions and the external pressure exerted on the butterfly gas cylinder liner by the composite material 5.

[0108] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0109] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An automated detection system for butterfly-shaped gas cylinder processing technology, characterized in that: include: A clamping unit, comprising a first clamping mechanism and a second clamping mechanism for clamping a butterfly-shaped gas cylinder liner, wherein the first end of the first clamping mechanism has a gas passage communicating with the butterfly-shaped gas cylinder liner, and the first end of the first clamping mechanism can be inserted into and block a material port of the butterfly-shaped gas cylinder liner; The pressure detection unit includes a first pressure detection unit and a second pressure detection unit, wherein the first pressure detection unit includes at least two pressure sensors, and the pressure sensors are arranged at different positions of the butterfly-shaped gas cylinder liner, and are used to detect the pressure difference between the external pressure and the internal pressure of the butterfly-shaped gas cylinder liner; the second pressure detection unit is arranged inside the butterfly-shaped gas cylinder liner and does not contact the inner wall of the butterfly-shaped gas cylinder liner, and the second pressure detection unit is used to detect the internal gas pressure of the butterfly-shaped gas cylinder liner; A temperature detection unit, comprising an internal temperature sensor for measuring the internal temperature of the inner liner of the butterfly-shaped gas cylinder and an external temperature sensor for measuring the peripheral temperature of the inner liner of the butterfly-shaped gas cylinder; A pressure regulating unit receives the pressure difference signal transmitted by the pressure sensor, and adjusts the pressure of the butterfly cylinder liner through the gas channel according to the pressure difference signal, so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance; and receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly cylinder liner is in an ascending stage, a stable stage or a descending stage, and then determines and compares the internal pressure of the butterfly cylinder liner with the external pressure of the butterfly cylinder liner, and directionally adjusts the pressure of the butterfly cylinder liner, so that the external pressure and the internal pressure of the butterfly cylinder liner are kept in dynamic balance; The pressure regulating unit includes an air pump and a controller; specifically includes: When the temperature of the butterfly cylinder liner is in the rising stage, the internal pressure of the butterfly cylinder liner increases, and when the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner, the controller controls the air pump to reduce the pressure of the butterfly cylinder liner; When the temperature of the inner liner of the butterfly-shaped gas cylinder is in a stable stage, the internal pressure of the inner liner of the butterfly-shaped gas cylinder remains unchanged, and the controller controls the air pump not to adjust the pressure of the inner liner of the butterfly-shaped gas cylinder; When the temperature of the butterfly cylinder liner is in a decreasing stage, the internal pressure of the butterfly cylinder liner decreases, and when the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner, the controller controls the air pump to increase the pressure of the butterfly cylinder liner; When the temperature of the butterfly cylinder liner is in the rising stage, the internal pressure of the butterfly cylinder liner increases, and the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner detected by the pressure sensor gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner; When the temperature of the butterfly cylinder liner is in a decreasing stage, the internal pressure of the butterfly cylinder liner decreases, and the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner detected by the pressure sensor gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner.

2. The automatic detection system for butterfly-shaped gas cylinder processing technology according to claim 1 is characterized in that: A support frame extending toward the interior of the butterfly-shaped gas cylinder liner is provided at the first end of the first clamping mechanism, and the second pressure detection unit is installed on the support frame.

3. The automatic detection system for butterfly-shaped gas cylinder processing technology according to claim 1 is characterized in that: A plurality of pressure sensors are arranged at intervals along a winding path on the outer arc surface of the butterfly-shaped gas cylinder liner, and the pressure sensors are also arranged at the material port of the butterfly-shaped gas cylinder liner.

4. The automatic detection system for butterfly-shaped gas cylinder processing technology according to claim 1 is characterized in that: The pressure regulating unit receives the pressure difference signal transmitted by the pressure sensor, and adjusts the pressure of the liner of the butterfly-shaped gas cylinder through the gas channel according to the pressure difference signal, so that the external pressure and the internal pressure of the liner of the butterfly-shaped gas cylinder are kept in dynamic balance, specifically comprising: The controller receives the pressure difference signal transmitted by the pressure sensor, and determines the maximum pressure value among the pressures applied to different positions of the butterfly cylinder liner at any same time or in any same period, and controls the air pump to adjust the pressure of the butterfly cylinder liner according to the maximum pressure value, so as to maintain a dynamic balance between the external pressure and the internal pressure of the butterfly cylinder liner.

5. An automated detection method for butterfly-shaped gas cylinder processing technology, characterized in that: The automated detection system using the butterfly-shaped gas cylinder processing technology described in any one of claims 1 to 4 comprises the following steps: S1. Clamp the butterfly-shaped gas cylinder liner between the first clamping mechanism and the second clamping mechanism of the clamping unit, arrange a plurality of pressure sensors on the butterfly-shaped gas cylinder liner along the winding path of the composite material, and pressurize the interior of the butterfly-shaped gas cylinder liner through the pressure regulating unit; S2. Winding the composite material on the outer peripheral surface of the butterfly cylinder liner according to a preset winding path, the pressure regulating unit obtains the pressure at different winding positions of the butterfly cylinder liner in real time according to the pressure sensor, and adjusts the internal pressure of the butterfly cylinder liner according to the maximum pressure value of the pressures at different winding positions at any same time or any same period during the winding process, so as to maintain a first dynamic balance between the external pressure applied by the composite material at different winding positions on the butterfly cylinder liner and the internal pressure of the butterfly cylinder liner during at least part or the entire winding process; S3. When the butterfly-shaped gas cylinder liner wrapped with the composite material and the automated detection system of the butterfly-shaped gas cylinder processing technology are cured together according to the curing procedure, at least during the entire curing process, the pressure regulating unit receives the temperature signals transmitted by the internal temperature sensor and the external temperature sensor, and determines whether the internal temperature of the butterfly-shaped gas cylinder liner is in a rising stage, a stable stage or a falling stage, and then determines and compares the internal pressure of the butterfly-shaped gas cylinder liner with the external pressure of the butterfly-shaped gas cylinder liner, and directionally adjusts the pressure of the butterfly-shaped gas cylinder liner so that a second dynamic balance is maintained between the external pressure and the internal pressure of the butterfly-shaped gas cylinder liner.

6. The automated detection method for butterfly-shaped gas cylinder processing technology according to claim 5 is characterized in that: The directionally adjusting the pressure of the inner liner of the butterfly-shaped gas cylinder so that the external pressure and the internal pressure of the inner liner of the butterfly-shaped gas cylinder are kept in dynamic balance specifically includes: The pressure regulating unit includes an air pump and a controller. When the temperature of the butterfly cylinder liner is in the rising stage, the internal pressure of the butterfly cylinder liner increases, and when the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner, the controller controls the air pump to reduce the pressure of the butterfly cylinder liner; When the temperature of the inner liner of the butterfly-shaped gas cylinder is in a stable stage, the internal pressure of the inner liner of the butterfly-shaped gas cylinder remains unchanged, and the controller controls the air pump not to adjust the pressure of the inner liner of the butterfly-shaped gas cylinder; When the temperature of the butterfly cylinder liner is in a decreasing stage, the internal pressure of the butterfly cylinder liner decreases. When the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner, the controller controls the air pump to increase the pressure of the butterfly cylinder liner.

7. The automated detection method for butterfly-shaped gas cylinder processing technology according to claim 6 is characterized in that: When the internal pressure of the butterfly-shaped gas cylinder liner is greater than the external pressure of the butterfly-shaped gas cylinder liner, the judgment method is: The pressure sensor detects that the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner gradually decreases to zero, and then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is greater than the external pressure of the butterfly cylinder liner; When the internal pressure of the butterfly-shaped gas cylinder liner is less than the external pressure of the butterfly-shaped gas cylinder liner, the judgment method is: The pressure sensor detects that the pressure difference between the external pressure and the internal pressure of the butterfly cylinder liner gradually decreases to zero, then gradually increases. When it exceeds a certain range, it is determined that the internal pressure of the butterfly cylinder liner is less than the external pressure of the butterfly cylinder liner.

8. The automated detection method for butterfly-shaped gas cylinder processing technology according to claim 5 is characterized in that: In S1, the winding path is spirally winding along the inner liner of the butterfly-shaped gas cylinder; or, The winding path is to perform circumferential winding at a preset winding angle along the first end section of the butterfly-shaped gas cylinder liner and then transition to longitudinal spiral winding at a preset winding angle along the second end section; or The winding path is a process of longitudinally spirally winding along the first end section of the butterfly-shaped gas cylinder liner at a preset winding angle and then transitioning to circumferentially winding along the second end section at a preset winding angle.

Images