Aviation heat exchanger test system

Abstract

The utility model provides an aviation heat exchanger test system, including: proportioning valve, flowmeter, acquisition module and control module, control module control proportioning valve according to preset target flow value and flow value fed back by flowmeter, make flowmeter indicate the current flow value as the target flow value. When the flow meter indicates that the current flow value is the target flow value, the control module stops outputting the control signal to the proportioning valve, and parameters currently collected by the collection module are obtained and recorded. Full automation of the aviation heat exchanger testing process is achieved, the defects of low efficiency, large errors and the like caused by manual adjustment of the testing airflow are avoided, the labor cost is saved, meanwhile, the testing operation difficulty is lowered, and the testing efficiency and the testing precision are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of aviation testing technology, and in particular, to an aviation heat exchanger testing system. Background Art

[0002] The heat exchanger test bench is generally designed based on the test schematic in the manufacturer's manual, including a valve to adjust the air flow, a flow meter to measure the flow, a temperature gauge and a pressure gauge.

[0003] There are two current heat exchanger test bench design schemes: one is to set a manual adjustment valve to adjust the air flow and measure the temperature and pressure at the corresponding flow; the other is to set a computer-controlled valve, and by inputting the required flow value, the valve automatically switches to control its flow to reach the required value. However, in the actual test process, the flow value needs to be manually modified to meet the test needs. Both of the above methods have the problems of cumbersome operation, low test efficiency, long time consumption, and high risk of setting numerical errors when manually inputting flow values. Utility Model Content

[0004] The utility model provides an aviation heat exchanger test system, which avoids the disadvantages of low test efficiency, high misoperation rate and the like caused by manual intervention, and realizes automatic control of the heat exchanger test process.

[0005] The aviation heat exchanger testing system provided by the utility model comprises:

[0006] An aviation heat exchanger testing system, comprising:

[0007] Metering and regulating module, acquisition module and control module;

[0008] The air inlet end of the metering and regulating module is connected to the air source inlet, and the air outlet end of the metering and regulating module is connected to the tested device through a connecting pipeline; the acquisition module is arranged on the connecting pipeline;

[0009] The control module is respectively connected to the metering and regulating module and the acquisition module by signal. The control module is used to control the metering and regulating module according to a preset target flow value and a flow value fed back by the metering and regulating module, so that the metering and regulating module indicates that the current flow value is the target flow value; when the metering and regulating module indicates that the current flow value is the target flow value, the control module is also used to obtain and record the parameters currently collected by the acquisition module.

[0010] Furthermore, the metering and regulating module includes a regulating valve and a flow meter, and the regulating valve is connected to the flow meter;

[0011] The air inlet of the regulating valve is connected to the air source inlet, the air outlet of the regulating valve is connected to the air inlet of the flow meter, and the air outlet of the flow meter is connected to the tested device through the connecting pipeline.

[0012] or,

[0013] The air inlet end of the flow meter is connected to the air source inlet, the air outlet end of the flow meter is connected to the air inlet end of the regulating valve, and the air outlet end of the regulating valve is connected to the tested device through the connecting pipeline.

[0014] Furthermore, the control module includes an industrial computer and a master control chassis, and the industrial computer and the master control chassis are signal-connected;

[0015] The master control box is connected to the regulating valve signal via a first communication cable;

[0016] The master control box is connected to the flow meter signal via a second communication cable;

[0017] The industrial computer is used to obtain the current air flow value collected by the flow meter through the master control chassis, and generate a regulating valve control signal according to the target flow value, and then send the regulating valve control signal to the regulating valve through the master control chassis.

[0018] Further, the acquisition module includes a pressure sensor, and the pressure sensor is connected to the master control chassis signal through a third communication cable;

[0019] The industrial computer is used to obtain and record the current pressure parameters collected by the pressure sensor through the master control chassis.

[0020] Further, the acquisition module includes a temperature sensor, and the temperature sensor is connected to the master control chassis signal through a fourth communication cable;

[0021] The industrial computer is used to obtain and record the current temperature parameters collected by the temperature sensor through the master control chassis.

[0022] Further, the regulating valve includes a valve controller;

[0023] The valve controller is connected to the master control chassis via the first communication cable signal, and the valve controller is used to receive the regulating valve control signal and control the regulating valve.

[0024] Furthermore, the type of the industrial computer is at least one of the following:

[0025] IPC, PLC, DCS, FCS, CNC.

[0026] Furthermore, the regulating valve is a proportional regulating valve.

[0027] Furthermore, the flow meter is a mass flow meter and / or a flow metering unit, wherein the flow metering unit is a combination of a flow integrator, an orifice flow meter, a temperature probe, and a pressure probe.

[0028] The aviation heat exchanger test system provided by the utility model is provided with a control module, which controls the proportional control valve according to the preset target flow value and the flow value fed back by the flow meter, so that the flow meter indicates that the current flow value is the target flow value. When the flow meter indicates that the current flow value is the target flow value, the control module stops outputting the control signal to the proportional control valve, obtains the parameters currently collected by the acquisition module and records them. The present application realizes the full automation of the test process, avoids the drawbacks of inefficiency and large errors caused by manual adjustment of the test airflow, saves labor costs, reduces the difficulty of test operations, and improves test efficiency and test accuracy.

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a module of an aviation heat exchanger testing system provided in an exemplary embodiment;

[0031] Figure 2 The present invention is a schematic diagram of the structure of an aviation heat exchanger testing system provided in an exemplary embodiment. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0033] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0034] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0035] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0037] Based on the content mentioned in the background technology, the present application proposes an aviation heat exchanger testing system, which includes a metering and regulating module, a collection module and a control module.

[0038] Among them, the air inlet end of the metering and regulating module is connected to the air source inlet, and the air outlet end of the metering and regulating module is connected to the tested device through a connecting pipeline; the acquisition module is arranged on the connecting pipeline;

[0039] The control module is respectively connected to the metering and regulating module and the acquisition module by signal. The control module is used to control the metering and regulating module according to the preset target flow value and the flow value fed back by the metering and regulating module, so that the metering and regulating module indicates that the current flow value is the target flow value; when the metering and regulating module indicates that the current flow value is the target flow value, the control module is also used to obtain and record the parameters currently collected by the acquisition module.

[0040] In a preferred embodiment, Figure 1As shown, it includes: a regulating valve, a flow meter, a collection module and a control module. Among them, the air inlet of the regulating valve is connected to the air source inlet, the air outlet of the regulating valve is connected to the air inlet of the flow meter, and the air outlet of the flow meter is connected to the tested device through a connecting pipeline.

[0041] That is, the test air flow enters the pipeline through the gas source inlet, the gas flow entering the tested device is controlled by the regulating valve, the test air flow enters the tested device through the connecting pipeline, and the flow meter is used to obtain the gas flow parameters in the current pipeline.

[0042] In another example, the positions of the regulating valve and the flow meter can be interchanged, that is, the air inlet of the flow meter is connected to the air source inlet, the air outlet of the flow meter is connected to the air inlet of the regulating valve, and the air outlet of the regulating valve is connected to the tested device through a connecting pipeline.

[0043] The acquisition module is arranged in the connecting pipeline to obtain relevant parameters in the current pipeline, such as pressure, temperature and other parameter information. Furthermore, the acquisition module can be arranged in a pipeline position close to the device under test, and the parameters collected at this position can better represent the gas parameter information input to the device under test.

[0044] The control module is connected to the regulating valve, flow meter and acquisition module signals respectively. Figure 1 As shown, Figure 1 The dotted line indicates the communication cable. The control module controls the regulating valve according to the preset target flow value and the flow value fed back by the flow meter, so that the flow meter indicates that the current flow value is the target flow value. When the flow meter indicates that the current flow value is the target flow value, the control module stops outputting the control signal to the proportional regulating valve, obtains the parameters currently collected by the collection module and records them.

[0045] In a preferred example, Figure 2 As shown, the regulating valve is a proportional regulating valve, and the control module includes an industrial computer and a master control chassis, the industrial computer and the master control chassis are signal connected; the master control chassis is signal connected to the proportional regulating valve through a first communication cable; the master control chassis is also signal connected to the flow meter through a second communication cable.

[0046] Specifically, the flow meter obtains the current air flow value in the pipeline and sends the air flow value to the master control chassis through the second communication cable, and the master control chassis sends the air flow value to the industrial computer. The industrial computer is installed with automatic testing software and stores the target flow value, wherein the target flow value is the flow value required to be input to the tested device during the current test. The industrial computer calculates the difference between the target flow value and the current air flow value through the automatic testing software, and then generates a regulating valve control signal based on the calculation result, and then sends the regulating valve control signal to the proportional regulating valve through the master control chassis. Specifically, if the current air flow value is larger than the target flow value, the industrial computer generates a signal to reduce the valve opening, which instructs the proportional regulating valve to reduce the opening, thereby reducing the gas flow; if the current air flow value is smaller than the target flow value, the industrial computer generates a signal to increase the valve opening, which instructs the proportional regulating valve to increase the opening, thereby increasing the gas flow.

[0047] Specifically, an industrial personal computer (IPC) is an industrial control computer, which is a general term for a tool that uses a bus structure to detect and control production processes, electromechanical equipment, and process equipment. The hardware equipment of an industrial personal computer includes but is not limited to a computer motherboard, CPU, hard disk, memory, peripherals, and interfaces, which can provide an operating system, control network and protocol, computing power, and a human-computer interaction interface.

[0048] In the embodiment of the present application, the industrial computer may be an IPC (industrial computer with PC bus), a PLC (programmable control system), a DCS (distributed control system), an FCS (field bus system), a CNC (numerical control system), etc. In some other examples, the industrial computer in the control module may also be an electronic computing device that can provide an operating system, a control network and protocol, computing power, and a human-computer interaction interface, including but not limited to personal computers, smart phones, and other intelligent terminal devices.

[0049] In a preferred example, the acquisition module includes a pressure sensor, and the pressure sensor is connected to the master control chassis signal through a third communication cable; the industrial computer is used to obtain and record the current pressure parameters collected by the pressure sensor through the master control chassis.

[0050] In a preferred example, the acquisition module also includes a temperature sensor, which is connected to the master control chassis signal via a fourth communication cable; the industrial computer is used to obtain and record the current temperature parameters collected by the temperature sensor through the master control chassis.

[0051] In a preferred example, the regulating valve includes a valve controller; the valve controller is connected to the master control chassis via the first communication cable signal, and the valve controller receives the regulating valve control signal and performs corresponding actions on the valve according to the control signal.

[0052] Specifically, the regulating valve may be any regulating valve capable of realizing automatic control, in addition to the proportional regulating valve used in the embodiment of the present application.

[0053] In a preferred example, the flow meter is a mass flow meter and / or a flow metering unit, wherein the flow metering unit is a combination of a flow integrator, an orifice flow meter, a temperature probe, and a pressure probe.

[0054] Specifically, the flow meter may be any metering instrument, sensor or a combination of the two that can realize the gas quality measurement function.

[0055] by Figure 2 Take this as an example to illustrate the working process of the embodiment of this application:

[0056] When the test begins, the test gas enters the test pipeline through the gas source inlet, the flow meter collects the current gas flow value and sends it to the master control chassis through the communication cable 2, and the master control chassis sends the gas flow value to the industrial computer; the industrial computer calculates the difference between the target flow value and the current air flow value through the automatic test software, and then generates the control valve control signal according to the calculation result, and then sends the control valve control signal to the master control chassis; the master control chassis then sends the control valve control signal to the valve controller of the proportional control valve through the communication cable 1. The valve controller controls the opening of the proportional control valve according to the corresponding signal instructions. The flow meter collects the gas flow value in the current test pipeline in real time; the system repeats the above signal transmission and valve control process until the flow meter indicates that the current gas flow value is stable at the target flow value. When the flow meter indicates that the current flow value is the target flow value, the industrial computer stops outputting the control signal to the proportional control valve, the temperature sensor and the pressure sensor collect the current temperature parameters and pressure parameters and send them to the master control chassis through the communication cable 4 and the communication cable 3 respectively, the master control chassis forwards the temperature parameters and pressure parameters to the industrial computer, the industrial computer records the temperature and pressure parameters, and calls the next target flow value, and the system executes closed-loop control of the next gas flow value.

[0057] After completing the test of all target flow values, the industrial computer compares the measured values ​​(gas flow value, temperature parameter, pressure parameter) obtained during the test with the standard value and outputs the corresponding test results.

[0058] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

[0059] The above-mentioned embodiments only express several implementation methods of the embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the embodiments of the present application, and these all belong to the protection scope of the embodiments of the present application.

Claims

1. An aviation heat exchanger testing system, characterized in that: include: Metering and regulating module, acquisition module and control module; The air inlet end of the metering and regulating module is connected to the air source inlet, and the air outlet end of the metering and regulating module is connected to the tested device through a connecting pipeline; the acquisition module is arranged on the connecting pipeline; The control module is respectively connected to the metering and regulating module and the acquisition module by signal. The control module is used to control the metering and regulating module according to a preset target flow value and a flow value fed back by the metering and regulating module, so that the metering and regulating module indicates that the current flow value is the target flow value; when the metering and regulating module indicates that the current flow value is the target flow value, the control module is also used to obtain and record the parameters currently collected by the acquisition module.

2. The aviation heat exchanger testing system according to claim 1, characterized in that: The metering and regulating module includes a regulating valve and a flow meter, and the regulating valve is connected to the flow meter; The air inlet of the regulating valve is connected to the air source inlet, the air outlet of the regulating valve is connected to the air inlet of the flow meter, and the air outlet of the flow meter is connected to the tested device through the connecting pipeline. or, The air inlet end of the flow meter is connected to the air source inlet, the air outlet end of the flow meter is connected to the air inlet end of the regulating valve, and the air outlet end of the regulating valve is connected to the tested device through the connecting pipeline.

3. The aviation heat exchanger testing system according to claim 2, characterized in that: The control module includes an industrial computer and a master control chassis, and the industrial computer and the master control chassis are signal-connected; The master control box is connected to the regulating valve signal via a first communication cable; The master control box is connected to the flow meter signal via a second communication cable; The industrial computer is used to obtain the current air flow value collected by the flow meter through the master control chassis, and generate a regulating valve control signal according to the target flow value, and then send the regulating valve control signal to the regulating valve through the master control chassis.

4. The aviation heat exchanger testing system according to claim 3, characterized in that: The acquisition module includes a pressure sensor, and the pressure sensor is connected to the master control chassis signal through a third communication cable; The industrial computer is used to obtain and record the current pressure parameters collected by the pressure sensor through the master control chassis.

5. The aviation heat exchanger testing system according to claim 3, characterized in that: The acquisition module includes a temperature sensor, and the temperature sensor is connected to the master control chassis signal through a fourth communication cable; The industrial computer is used to obtain and record the current temperature parameters collected by the temperature sensor through the master control chassis.

6. The aviation heat exchanger testing system according to claim 3, characterized in that: The regulating valve includes a valve controller; The valve controller is connected to the master control chassis via the first communication cable signal, and the valve controller is used to receive the regulating valve control signal and control the regulating valve.

7. The aviation heat exchanger testing system according to claim 3, characterized in that: The type of the industrial computer is at least one of the following: IPC, PLC, DCS, FCS, CNC.

8. The aviation heat exchanger testing system according to claim 2, characterized in that: The regulating valve is a proportional regulating valve.

9. The aviation heat exchanger testing system according to claim 2, characterized in that: The flow meter is a mass flow meter and / or a flow metering unit, wherein the flow metering unit is a combination of a flow integrator, an orifice flow meter, a temperature probe, and a pressure probe.

Images