Large-flow universal rapid high-precision pressurizing system

Abstract

The invention belongs to the technical field of pressurizing tests, and particularly relates to a large-flow universal rapid high-precision pressurizing system. A first surge tank connector of a surge tank is connected with a gas source through a first pipeline; the negative pressure station is provided with a negative pressure station interface; a first pressure console interface of the pressure console is connected with a second surge tank interface through a second pipeline, a second pressure console interface is connected with a negative pressure station interface through a third pipeline, and a pressure sensor is arranged in the pressure console; a test piece pressurization interface of the test piece is connected with a third pressure console interface through a fourth pipeline, a test piece pressure relief interface is connected with the third pressure console interface through a fifth pipeline, a first pneumatic butterfly valve is arranged on the fourth pipeline, a second pneumatic butterfly valve is arranged on the fifth pipeline, and a pressure sensor is arranged in the test piece; the control unit is used for controlling the directions and the opening degrees of the first pneumatic butterfly valve and the second pneumatic butterfly valve according to received pressure signals of the pressure sensor.

Description

Technical Field

[0001] The present application belongs to the technical field of pressure charging test, and in particular relates to a large-flow universal fast and high-precision pressure charging system. Background Art

[0002] The pressure test is to test the pressure-bearing strength and air tightness of the pressure vessel.

[0003] Traditional pressure test uses proportional pressure valve or electric butterfly valve. Proportional pressure valve has fast response speed, but insufficient flow rate and expensive price. Electric butterfly valve has nonlinear relationship between flow rate and opening and closing angle, and has relatively large dead zone at 0 and 90 degrees, which cannot meet high-precision test control.

[0004] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0005] The purpose of the present application is to provide a large-flow universal fast and high-precision charging system to solve at least one problem existing in the prior art.

[0006] The technical solution of this application is:

[0007] A large-flow universal fast and high-precision charging system, comprising:

[0008] A pressure stabilizing tank, wherein the pressure stabilizing tank has a first pressure stabilizing tank interface and a second pressure stabilizing tank interface, wherein the first pressure stabilizing tank interface is connected to a gas source via a first pipeline;

[0009] A negative pressure station, wherein the negative pressure station has a negative pressure station interface;

[0010] A pressure console, wherein the pressure console has a first pressure console interface, a second pressure console interface and a third pressure console interface, wherein the first pressure console interface is connected to the second pressure stabilizing tank interface via a second pipeline, and the second pressure console interface is connected to the negative pressure station interface via a third pipeline, and a pressure sensor is disposed inside the pressure console;

[0011] A test piece, wherein the test piece has a test piece pressurization interface and a test piece pressure relief interface, the test piece pressurization interface is connected to the third pressure control console interface via a fourth pipeline, the test piece pressure relief interface is connected to the third pressure control console interface via a fifth pipeline, a first pneumatic butterfly valve is provided on the fourth pipeline, a second pneumatic butterfly valve is provided on the fifth pipeline, and a pressure sensor is provided inside the test piece;

[0012] A control unit, wherein the control unit is used to control the direction and opening degree of the first pneumatic butterfly valve and the second pneumatic butterfly valve according to the pressure signal received from the pressure sensor.

[0013] In at least one embodiment of the present application, the gas source is an impact gun gas tank.

[0014] In at least one embodiment of the present application, a mechanical safety valve is disposed inside the pressure control console.

[0015] In at least one embodiment of the present application, the test piece is an aircraft fuselage fuel tank.

[0016] In at least one embodiment of the present application, the control unit is an MTS control system.

[0017] In at least one embodiment of the present application, two pressure sensors are disposed inside the pressure control console.

[0018] In at least one embodiment of the present application, two pressure sensors are disposed inside the test piece.

[0019] The invention has at least the following beneficial technical effects:

[0020] The large-flow universal fast and high-precision charging system of the present application is a charging system constructed based on a pneumatic butterfly valve. It is inexpensive and has both high response speed and large flow, and can achieve high-precision charging test control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a large-flow universal fast and high-precision charging system according to an embodiment of the present application;

[0022] Figure 2 It is a charging test debugging curve and error diagram of an implementation method of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0025] The following is combined with Figure 1 to Figure 2 This application is described in further detail.

[0026] The present application provides a large-flow universal fast and high-precision pressure charging system, including: a pressure stabilizing tank, a negative pressure station, a pressure control console, a test piece and a control unit.

[0027] like Figure 1 As shown, the pressure-stabilizing tank has a first pressure-stabilizing tank interface and a second pressure-stabilizing tank interface, and the first pressure-stabilizing tank interface is connected to the gas source through a first pipeline; the negative pressure station has a negative pressure station interface; the pressure control console has a first pressure control console interface, a second pressure control console interface and a third pressure control console interface, the first pressure control console interface is connected to the second pressure-stabilizing tank interface through a second pipeline, the second pressure control console interface is connected to the negative pressure station interface through a third pipeline, and a pressure sensor is arranged inside the pressure control console; the test piece has a test piece pressurizing interface and a test piece pressure relief interface, the test piece pressurizing interface is connected to the third pressure control console interface through a fourth pipeline, the test piece pressure relief interface is connected to the third pressure control console interface through a fifth pipeline, a first pneumatic butterfly valve is arranged on the fourth pipeline, a second pneumatic butterfly valve is arranged on the fifth pipeline, and a pressure sensor is arranged inside the test piece; the control unit is used to control the direction and opening of the first pneumatic butterfly valve and the second pneumatic butterfly valve according to the pressure signal received from the pressure sensor.

[0028] The large-flow universal fast high-precision pressure charging system of the present application is connected to the gas source at one end of the pressure-stabilizing tank and the pressure control console at the other end. It can withstand high pressure and negative pressure and realize the pressure-stabilizing energy storage function; the inlet and outlet air of the pressure control console is connected to the test piece through a pneumatic butterfly valve, which has a high response speed and can realize large flow control. The control unit collects the pressure signal of the pressure sensor, and controls the direction and opening size of the pneumatic butterfly valve by sending an analog signal (range 0-10V) to control the inlet and outlet air volume, thereby obtaining precise pressure control.

[0029] In a preferred embodiment of the present application, the gas source is an impact gun gas tank, the test piece is an aircraft fuselage fuel tank, and the control unit is an MTS control system.

[0030] In this embodiment, a mechanical safety valve is provided inside the pressure control console to provide safety protection for the inlet and outlet gases respectively.

[0031] In this embodiment, two pressure sensors are arranged inside the pressure control console, and two pressure sensors are arranged inside the test piece, so as to realize dual redundancy control of pressure detection and improve the reliability of the system.

[0032] The large-flow universal fast high-precision pressure charging system of the present invention can be applied to the large aircraft fuselage fuel tank pressure charging test to complete the large aircraft fuselage compartment section (about 25m 3 ) Fatigue test 120,000 times, input pressure 1.1MPa per cycle, after debugging, the fastest cycle can reach 22s, and the error is less than 0.3KPa (0.15%). In one embodiment of the present application, the pressure test debugging curve and error are as follows Figure 2 shown.

[0033] The large-flow universal fast high-precision pressure charging system of the present application can realize large-flow high-precision pressure charging test control, and for large-flow pressure charging tests, it can ensure its loading accuracy and test rate, greatly shortening the test cycle. The present application is widely applicable to various types of pressure charging tests, and therefore has broad application prospects in the civilian field.

[0034] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A large-flow universal fast and high-precision charging system, characterized in that: include: A pressure stabilizing tank, wherein the pressure stabilizing tank has a first pressure stabilizing tank interface and a second pressure stabilizing tank interface, wherein the first pressure stabilizing tank interface is connected to a gas source via a first pipeline; A negative pressure station, wherein the negative pressure station has a negative pressure station interface; A pressure console, wherein the pressure console has a first pressure console interface, a second pressure console interface and a third pressure console interface, wherein the first pressure console interface is connected to the second pressure stabilizing tank interface via a second pipeline, and the second pressure console interface is connected to the negative pressure station interface via a third pipeline, and a pressure sensor is disposed inside the pressure console; A test piece, wherein the test piece has a test piece pressurization interface and a test piece pressure relief interface, the test piece pressurization interface is connected to the third pressure control console interface via a fourth pipeline, the test piece pressure relief interface is connected to the third pressure control console interface via a fifth pipeline, a first pneumatic butterfly valve is provided on the fourth pipeline, a second pneumatic butterfly valve is provided on the fifth pipeline, and a pressure sensor is provided inside the test piece; A control unit, wherein the control unit is used to control the direction and opening degree of the first pneumatic butterfly valve and the second pneumatic butterfly valve according to the pressure signal received from the pressure sensor.

2. The large flow universal fast high precision charging system according to claim 1 is characterized in that: The gas source is an impact gun gas storage tank.

3. The large flow universal fast high precision charging system according to claim 1 is characterized in that: A mechanical safety valve is arranged inside the pressure control console.

4. The large flow universal fast high precision charging system according to claim 1 is characterized in that: The test piece is an aircraft fuselage fuel tank.

5. The large flow universal fast high precision charging system according to claim 1 is characterized in that: The control unit is an MTS control system.

6. The large flow universal fast high precision charging system according to claim 1 is characterized in that: Two pressure sensors are arranged inside the pressure control console.

7. The large flow universal fast high precision charging system according to claim 1 is characterized in that: Two pressure sensors are arranged inside the test piece.

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