Portable and detachable air pressure loading device for experimental fiber winding shell

Abstract

A portable and detachable air pressure loading device for an experimental fiber winding shell belongs to the field of experimental devices, and is characterized by comprising a four-way interface, a precision pressure sensor, a pneumatic booster pump, an overpressure protection module and a pulsation damper, an inflation pipe is arranged on the pneumatic booster pump; one end of the inflating pipe is connected with the pneumatic booster pump, and the other end is provided with a pneumatic quick interface; the precise pressure sensor is connected with the first interface through the pulsation damper; the pneumatic booster pump is connected with the second interface through the pneumatic quick interface; and the overvoltage protection module is connected with the third interface. During an experiment, a pressure container to be experimented is connected through the fourth interface, the precision pressure sensor detects inflation pressure data in real time through the precision pressure sensor pulsation damper, and the inflation interface is matched with the pneumatic booster pump. The air pressure loading device is simple in structure, easy to operate, capable of being suitable for the inflation test of the fiber winding shell, good in adjustability, convenient to use and suitable for application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of experimental device, especially relate to a portable detachable experimental fiber winding shell air pressure loading device. BACKGROUND

[0002] Fiber reinforced composite shell is widely used in aerospace field because of its excellent specific strength, but winding forming process is easy to produce interlaminar defects (including fiber bridging, resin enrichment and micropore), these defects can lead to stress concentration phenomenon of shell under pressure working condition. According to the standard requirement of ASTM D2585-2018, air pressure loading test can effectively evaluate the integrity of shell structure as non-destructive testing means. When shell integrates optical fiber sensor network, the rigid connection structure of the existing device can affect the sensor layout space, and repeated disassembly and assembly can lead to sealing failure. Therefore, it is necessary to develop an air pressure loading device with stable pressure conduction, modular integration and fast adaptation characteristics to meet the engineering requirements of high-precision defect detection. SUMMARY

[0003] The utility model aims at solving above-mentioned problem, provides a portable detachable experimental fiber winding shell air pressure loading device that can realize quick connection.

[0004] The portable detachable experimental fiber winding shell air pressure loading device, comprising four-way joint, precision pressure sensor, pneumatic booster pump, overvoltage protection module and pulsation damper,

[0005] The four-way joint includes first interface, second interface, third interface and fourth interface.

[0006] The pneumatic booster pump is provided with a charging pipe; one end of the charging pipe is connected with the pneumatic booster pump, and the other end is provided with a first pneumatic quick connector.

[0007] The foregoing precision pressure sensor is connected with the first interface through the pulsation damper; the foregoing pneumatic booster pump is connected with the second interface through the first pneumatic quick connector; and the foregoing overvoltage protection module is connected with the third interface.

[0008] Further, the portable detachable experimental fiber winding shell air pressure loading device, the pulsation damper is helical.

[0009] The pulse damper is connected with the precision pressure sensor at one end and connected with the first interface through the first variable diameter adapter at the other end.

[0010] Further, the portable and detachable experimental fiber winding shell air pressure loading device is provided with a second variable diameter adapter between the first pneumatic quick connector and the second interface.

[0011] Further, the portable and detachable experimental fiber winding shell air pressure loading device is provided with a second pneumatic quick connector connected with the fourth interface.

[0012] The portable and detachable experimental fiber winding shell air pressure loading device has a four-way interface, which is connected with the precision pressure sensor pulse damper through the first interface, connected with the inflation interface and the overpressure protection module through the second interface and the third interface respectively, connected with the pressure container to be experimented through the fourth interface, and the precision pressure sensor detects the pressure data of inflation in real time through the precision pressure sensor pulse damper. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The portable and detachable experimental fiber winding shell air pressure loading device is shown in the exploded structural schematic view.

[0014] Figure 2 The portable and detachable experimental fiber winding shell air pressure loading device is shown in the schematic view.

[0015] 1, precision pressure sensor, 2, pulse damper, 3, second variable diameter adapter, 4, first pneumatic quick connector, 5, inflation pipe, 6, pneumatic booster pump, 7, four-way interface, 8, first variable diameter adapter, 9, two-way interface, 10, overpressure protection module, 11, pressure container rear cover, 12, pressure container to be detected. DETAILED DESCRIPTION

[0016] The portable, detachable experimental fiber-wound shell pneumatic loading device of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0017] This embodiment discloses a portable, detachable experimental fiber-wound shell pneumatic loading device, such as... Figure 1 As shown, the system includes a four-way interface 7, a precision pressure sensor 1, a pneumatic booster pump 6, an overpressure protection module 10, and a pulsation damper 2. The four-way interface 7 includes a first interface, a second interface, a third interface, and a fourth interface. The pneumatic booster pump 6 is equipped with an inflation pipe 5. One end of the inflation pipe 5 is connected to the pneumatic booster pump 6, and the other end is equipped with a first pneumatic quick interface 4. The aforementioned precision pressure sensor 1 is connected to the first interface through the pulsation damper 2. The aforementioned pneumatic booster pump 6 is connected to the second interface through the first pneumatic quick interface 4. The aforementioned overpressure protection module 10 is connected to the third interface through a two-way interface 9.

[0018] In this embodiment, the pulsation damper 2 is helical; one end of the pulsation damper 2 is connected to the aforementioned precision pressure sensor 1, and the other end is connected to the first interface via the first diameter adapter 8. A second diameter adapter 3 is provided between the first pneumatic quick interface 4 and the second interface; the first pneumatic quick interface 4 is connected to the aforementioned second interface via the second diameter adapter 3. A second pneumatic quick interface is connected to the fourth interface. A pressure vessel rear cover 11 is pre-installed at one end of the pressure vessel 12 connected to the pneumatic loading device, and the pressure vessel rear cover 11 is provided with a connection hole for connecting to the second pneumatic quick interface.

[0019] When using this experimental setup, such as Figure 2 As shown, firstly, the second pneumatic quick-connect port connected to the fourth port of the four-way connector 7 is connected to the connection hole on the rear cover 11 of the pressure vessel to be tested. In this embodiment, all connection ports are equipped with matching sealing gaskets or wrapped with plastic sealing tape to ensure that the connection between the four-way connector 7 and the pressure vessel is firm and leak-free. Then, the pneumatic booster pump 6 is turned on, and the gas enters the pressure vessel through the inflation pipe 5, the first pneumatic quick-connect port 4, and the second diameter adapter 3 via the second port. At this time, the precision pressure sensor 1 displays the pressure value inside the pressure vessel in real time through the precision pressure sensor 1 pulsation damper 2. The experimenter can control the operation of the pneumatic booster pump 6 according to the experimental requirements to make the pressure inside the pressure vessel reach the predetermined value, and continuously observe the pressure changes and the state of the pressure vessel, thereby completing the pressure experiment on the pressure vessel. When the air pressure exceeds the preset range, the overpressure protection module 10 issues an alarm signal to remind the experimenter to take timely measures to avoid experimental safety accidents caused by excessive pressure.

Claims

1. A portable, detachable experimental fiber-wound shell pneumatic loading device, characterized in that: Includes a four-way connector, a precision pressure sensor, a pneumatic booster pump, an overpressure protection module, and a pulsation damper; The four-way interface includes a first interface, a second interface, a third interface, and a fourth interface; The pneumatic booster pump is equipped with an air inlet pipe; one end of the air inlet pipe is connected to the pneumatic booster pump, and the other end is equipped with a first pneumatic quick-connect interface. The aforementioned precision pressure sensor is connected to the first interface via a pulsation damper; the aforementioned pneumatic booster pump is connected to the second interface via a first pneumatic quick interface; and the aforementioned overpressure protection module is connected to the third interface.

2. The portable and detachable experimental fiber-wound shell pneumatic loading device according to claim 1, characterized in that: The pulsation damper is spiral-shaped; One end of the pulsation damper is connected to the aforementioned precision pressure sensor, and the other end is connected to the first interface via the first variable diameter adapter.

3. The portable and detachable experimental fiber-wound shell pneumatic loading device according to claim 2, characterized in that: A second diameter adapter is provided between the first pneumatic quick-connect interface and the second interface; the first pneumatic quick-connect interface is connected to the aforementioned second interface via the second diameter adapter.

4. The portable and detachable experimental fiber-wound shell pneumatic loading device according to claim 3, characterized in that: The fourth interface is connected to a second pneumatic quick-connect interface.

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