Power component performance detection device and method

Abstract

The invention provides a power assembly performance detection device and method. The interior of the product absolute pressure assembly, the interior of the operation assembly and the interior of the absolute pressure assembly are sequentially divided into a cavity A, a cavity B and a cavity C through diaphragms I and II, an adjusting spring is arranged in the cavity A of the product absolute pressure assembly, and vacuum corrugated pipes are arranged in the cavity A of the operation assembly and the cavity A of the absolute pressure assembly. Double-nozzle linkage valves are arranged in the cavities B of the three assemblies, and reset springs are arranged in the cavities C of the three assemblies; according to the structure of the double-nozzle linkage valve, a baffle is fixed to the center of each of the diaphragms I and II, the two baffles are linked with each other, double nozzles are arranged in the cavity B, and the baffles and the double nozzles are matched to form two linkage valves, namely the valve I and the valve II; when the two linked baffles move to the limit position close to the cavity A / C, the valve I / II is fully opened, the valve II / I is closed, and the cavity B outputs the pressure of the valve I / II. The invention has the advantages of simple and convenient operation, direct data reading, less device investment, high output, high efficiency and high cost performance of the device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field, and particularly relates to a power assembly performance detection device and method. BACKGROUND

[0002] The power assembly is a matching equipment in the test process of the cabin regulator product, and mainly functions to test the performance indexes of the product in various flight states by giving a pressure signal (including flight height, atmospheric pressure) in flight, a difference between total pressure and static pressure, and an opening pressure difference of an exhaust valve.

[0003] The cabin regulator is a key product of the aircraft environmental control system. Due to the complex structure, long production cycle and difficult performance debugging of the cabin regulator product.

[0004] The test bench used for performance test of the cabin regulator product has two important components, namely, the power assembly, which is the core of the entire test bench. The function of the power assembly is also irreplaceable by other test equipment. Once the used product on the equipment fails, there is no similar process part that can be borrowed and replaced in the domestic, so the production line of the product will be stopped. In view of the unique role and importance of the power assembly on the cabin regulator performance test bench, the patent CN113984367A discloses a kind of aircraft cabin pressure controller performance detection method and device to guarantee the related technology of the cabin regulator performance test bench, which detects the physical performance of the power assembly on the ground. However, the detection device used in the detection process has a relatively complex structure, high production and maintenance cost, long detection time, low efficiency and high cost performance ratio. SUMMARY

[0005] The purpose of the present application is to provide a power assembly performance detection device and method. The present application can complete the pressure system check and other test contents of the power assembly, meet the single operation, and has the advantages of simple and convenient operation, direct reading of data, low investment, high output, high efficiency and high cost performance ratio.

[0006] Technical scheme. A power assembly performance detection device, comprising a product absolute pressure assembly, an operation assembly and an absolute pressure assembly, the interiors of the three assemblies are sequentially separated into cavities A, B and C by diaphragms I and II, the cavity A of the product absolute pressure assembly is internally provided with an adjusting spring, the cavities A of the operation assembly and the absolute pressure assembly are each internally provided with a vacuum bellows; the cavity B of each of the three assemblies is internally provided with a double-nozzle linkage valve, and the cavity C of each of the three assemblies is internally provided with a reset spring; the double-nozzle linkage valve structure is that one baffle is fixed in the center of each of the diaphragms I and II, the two baffles are linked with each other, a double nozzle is internally provided in the cavity B, and the baffle and the double nozzle cooperatively form two valves, namely, valve I and valve II, linked with each other; when the two linked baffles move to the limit positions close to the cavity A / cavity C, the valve I / valve II is fully opened, and the valve II / valve I is closed, and the cavity B outputs the pressure of the valve I / valve II.

[0007] In the power assembly performance detection device, the operation assembly and the absolute pressure assembly jointly form the power assembly; the valve interfaces of the valve I of the operation assembly and the valve I of the absolute pressure assembly are connected in parallel to form a detection interface a, the valve interfaces of the valve II are connected in parallel to form a detection interface b, the venting ports of the cavities A, B and C of the operation assembly are connected in parallel to form a detection interface c, the venting port of the vacuum bellows of the operation assembly forms a detection interface d, and the venting ports of the cavities A, B and C of the absolute pressure assembly are connected in parallel to form a detection interface e.

[0008] In the power assembly performance detection device, the detection interface a is connected with an atmospheric height simulation assembly, the detection interface b is connected with a target pressure simulation assembly, the detection interface c is communicated with the valve II of the product absolute pressure assembly, the venting ports of the cavities B and C of the product absolute pressure assembly are connected in parallel and communicated with the detection interface d, and the venting port of the cavity A of the product absolute pressure assembly and the valve interface of the valve I are connected in parallel and communicated with the detection interface e.

[0009] In the power assembly performance detection device, a pressure transmitter is installed at the detection interface b, a pressure transmitter 1 is installed between the detection interfaces c and d, a pressure transmitter 2 is installed at the detection interface d, and a pressure transmitter 3 is installed at the detection interface e.

[0010] In the power assembly performance detection device, each pressure transmitter is provided with a differential pressure digital display.

[0011] In the power assembly performance detection device, the atmospheric height simulation assembly comprises an atmospheric gas tank, one end of the atmospheric gas tank is communicated with the detection interface a, and the other end is communicated with a gas source branch and a vacuum branch connected in parallel; an adjusting valve A3 is arranged on the gas source branch, the adjusting valve A3 is connected with a gas source, the vacuum branch is provided with an adjusting valve A2 and a vacuum pump M1 connected in series; and a vacuum gauge is installed at the detection interface a.

[0012] In the power assembly performance detection device, the target pressure simulation assembly comprises a coarse gas filter, an adjusting valve A1, a precision gas filter and a pressure reducer connected in series, the pressure reducer is connected with the detection interface b, and the coarse gas filter is connected with a gas source.

[0013] A detection method based on the power assembly performance detection device, comprising: Step 1, open the adjusting valve A3; Step 2, control the opening degree of the adjusting valve A1 to adjust the pressure at the detection interface b to a target pressure value; Step 3, start the vacuum pump M1; Step 4, control the opening degree of the adjusting valve A2 to obtain the vacuum degree corresponding to each atmospheric height; Step 5, record the readings of the pressure transmitters 1-3 corresponding to the target pressure value and the atmospheric height, and complete the corresponding pressure regime inspection of the power assembly.

[0014] Beneficial effects: The application adjusts the absolute pressure assembly, the product absolute pressure assembly and the operation assembly, adjusts the differential pressure between the detection interface e and the atmosphere (differential pressure transmitter 3), the differential pressure between the detection interface d and the atmosphere (differential pressure transmitter 2), the differential pressure between the detection interfaces c and d (differential pressure transmitter 1), and can meet the performance detection requirements.

[0015] The application measures the performance data of the product by the pressure transmitter and the differential pressure transmitter, and can complete the pressure system inspection of the power assembly and other test contents; the device meets single-person operation, is simple and convenient to operate, directly reads data, has low investment, high output, high efficiency and high cost performance.

[0016] In summary, the application can solve the technical problems of complex structure, high production and maintenance cost, long detection time and low efficiency of the prior art detection device, and can provide performance detection of the power assembly as the core component of the cabin regulator performance test bench. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of the power assembly performance detection device of the application; Figure 2 FIG. 2 is a structural schematic diagram of the power assembly; Figure 3 FIG. 3 is a structural schematic diagram of the absolute pressure assembly; Figure 4 FIG. 4 is a structural schematic diagram of the operation assembly; Figure 5 FIG. 5 is a structural schematic diagram of the product absolute pressure assembly; Figure 6 FIG. 6 is a structural schematic diagram of the double-nozzle linkage valve; Figure 7 FIG. 7 is a structural schematic diagram of the traditional power assembly performance detection device (CN113984367A). DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0019] The features and exemplary embodiments of the various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely illustrative of the present application and is not intended to limit the present application to any particular setting or method. The present application covers any improvements and modifications of the structures, methods, devices, and the like, which are within the spirit of the present application. In the drawings and the following description, well-known structures and techniques have not been shown or described in detail in order not to obscure the present application.

[0020] It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other, and the embodiments can be referred to and cited to each other, without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0021] Embodiment 1. A power assembly performance detection device, see Figures 1-6 , comprising a product absolute pressure assembly, an operation assembly, and an absolute pressure assembly, the three assemblies are sequentially separated into cavities A, B, and C by diaphragms I 1 and II 2, the cavity A of the product absolute pressure assembly is internally provided with an adjusting spring 3, and the cavities A of the operation assembly and the absolute pressure assembly are each internally provided with a vacuum bellows 4; the cavity B of the three assemblies is a pressure modulation cavity, and the cavity B is internally provided with a double-nozzle linkage valve, and the cavity C is internally provided with a reset spring 5; the structure of the double-nozzle linkage valve is shown in Figure 6 : the central part of each of the diaphragms I and II is fixed with a baffle 6, the two baffles 6 are linked to each other, the cavity B is internally provided with a double nozzle, and the baffle 6 and the double nozzle cooperate to form two valves, valve I 7 and valve II 8, which are linked to each other; the two nozzles corresponding to the valves I and II are connected to different input pressures PAI2 and PAH2, respectively, the flow area of the valve is controlled by the movement of the linked baffle 6, the movement of the linked baffle 6 to one side will increase the gas flow area of one valve, and the gas flow area of the other valve will decrease, for example, when the linked baffle 6 moves upward (close to the cavity A), the flow area of the valve I increases, and the flow area of the valve II decreases, the input pressures of the two valves are different, and PAI2 < PAH2, based on this, the pressure in the cavity B is adjusted, when the two linked baffles 6 move to the limit position close to the cavity A / cavity C, the valve I 7 / the valve II 8 is fully open, and the valve II 8 / the valve I 7 is closed, and the pressure PAI2 / PAH2 of the output valve I 7 / the output valve II 8 of the cavity B.

[0022] The operation assembly and the absolute pressure assembly are combined to form a power assembly; the valve interfaces of the valves I 7 of the operation assembly and absolute pressure assembly are connected in parallel to form a detection interface a, the valve interfaces of the valves II 8 are connected in parallel to form a detection interface b, the venting ports of the cavities A, B and C of the operation assembly are connected in parallel to form a detection interface c, the venting port of the vacuum bellows 4 of the operation assembly forms a detection interface d, and the venting ports of the cavities A, B and C of the absolute pressure assembly are connected in parallel to form a detection interface e.

[0023] The detection interface a is connected with an atmospheric height simulation assembly, the detection interface b is connected with a target pressure simulation assembly, the detection interface c is communicated with the valves II 8 of the product absolute pressure assembly, the cavities B and C of the product absolute pressure assembly are connected in parallel and communicated with the detection interface d, and the cavity A of the product absolute pressure assembly and the valve interfaces of the valves I 7 are connected in parallel and communicated with the detection interface e.

[0024] A pressure transmitter is installed at the detection interface b, a pressure transmitter 1 is installed between the detection interfaces c and d, a pressure transmitter 2 is installed at the detection interface d, and a pressure transmitter 3 is installed at the detection interface e.

[0025] Each of the pressure transmitters is provided with a differential pressure digital display.

[0026] The atmospheric height simulation assembly comprises an atmospheric air tank, one end of the atmospheric air tank is communicated with the detection interface a, and the other end is communicated with air source branches and vacuum branches connected in parallel; an adjusting valve A3 is arranged on the air source branch, the adjusting valve A3 is connected with an air source, and an adjusting valve A2 and a vacuum pump M1 are arranged in series on the vacuum branch; and a vacuum gauge is installed at the detection interface a.

[0027] The volume of the atmospheric air tank is 1.5-2.5 liters; the calculation is as follows: Let G n be the air supply flow of the cabin; G B be the air intake of the air supplement valve; G y be the air exhaust of the vacuum pump; P c and P H be the pressures of the cabin and the atmospheric tank respectively; V c and V H be the volumes of the cabin and the atmospheric tank respectively.

[0028] For the air of the atmospheric tank:

[0029] In the formula, G is the air flow of the atmospheric tank; T H is the temperature of the atmospheric tank, which can be a constant when simulating on the ground.

[0030] When the flow is balanced: ​= = (1) for = =

[0031] where = , is the climb or dive speed.

[0032] so = (2) For the cabin air: =

[0033] then = = (3) In the calculation of G n , the flow of the air supply valve is set to G y =0, because it is simulated on the ground, T H =T c , = , and the above formula is integrated to obtain: = (4) The flow G B of the air supply valve is related to the volume of the air tank and the cabin, the dive speed V y , the air supply flow G n , and the temperature T, and these parameters are constants, and only is a variable.

[0034] Through the above formula, it is calculated that the air tank adopts 1.5-2.5 liters.

[0035] The target pressure simulation assembly described above comprises a coarse air filter 9, a regulating valve A1, a precision air filter 10, and a pressure reducer 11 connected in series.

[0036] The detection method of the power assembly performance detection device described above comprises: Step 1, open the regulating valve A3; Step 2, control the opening degree of the regulating valve A1 to adjust the pressure at the detection interface b to the target pressure value; Step 3, start the vacuum pump M1; Step 4, control the opening degree of the regulating valve A2 to obtain the corresponding vacuum degree at each altitude. Step 5, record the target pressure value, atmospheric pressure corresponding to the pressure transmitter 1-3 readings, complete the power component corresponding to the pressure regime test content.

[0037] Step 6, after the completion of the test, the instrument and valve to the initial state.

[0038] In the traditional scheme, the power components on the ground to do physical performance testing, using the detection device as shown in Figure 7 The detection device includes mechanical system and electrical system, etc. two parts, mechanical system mainly by the gas supply pipeline and the air supply pipeline, etc. two parts constitute, gas supply pipeline by valve ①, coarse filter ②, precision filter ③, pressure reducing valve ④, valve ⑤, pneumatic valve ⑦, total pressure cabin ⑨ (15m³), cabin ⑲ (1.8m³) etc. constitute, air supply pipeline by servo control valve ⑥, servo control valve ⑮, vacuum pump ⑬, atmospheric cabin (15m³) and servo control valve ⑩, servo control valve ⑫, total pressure cabin (15m³) and vacuum pump ⑪ etc. constitute, instrument by total pressure static pressure differential pressure transmitter ⑭, cabin static pressure differential pressure transmitter ⑰, cabin command differential pressure transmitter ⑱, gas supply pressure transmitter, atmospheric cabin pressure transmitter, etc.

[0039] The electrical control system mainly consists of industrial computer, PLC, switching value, analog quantity, display instrument, electric servo control valve driver, DC power supply, etc. The electrical control system mainly sets and controls the test parameters of the product, and displays each test parameter.

[0040] The cabin pressure is adjusted by the gas supply pipeline, the atmospheric cabin pressure is adjusted by the air supply pipeline, and the total pressure cabin pressure is adjusted by the air supply pipeline and the gas supply pipeline.

[0041] The power component performance detection method used by the operator is to measure the instrument through the pressure transmitter, differential pressure transmitter to directly display the product performance data measurement results, which can complete the power component pressure regime inspection and other test contents. However, the cabin, atmospheric cabin and total pressure cabin have large capacity, the air compressor and vacuum pump unit have large capacity and high power consumption, and many people are involved in the product test; the device needs to be operated by multiple people, the operation panel of the device is complex and cumbersome, the data is directly read, the device investment is large, the output is low, the efficiency is low, and the cost performance of the device is low.

[0042] Referring to Figure 1The power assembly performance detection method and device provided by the application can complete the test contents such as the pressure system check of the power assembly, and can satisfy single-person operation, and the operation panel of the device is simple and convenient to operate, data is directly read, the device has low investment, high output, high efficiency, and high cost performance.

[0043] The above examples are merely examples for clear illustration, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can also be made by those of ordinary skill in the art.

Claims

1. A power component performance testing device, characterized in that, The product includes an absolute pressure assembly, a calculation assembly, and an absolute pressure assembly. The interior of each of the three assemblies is divided into chambers A, B, and C by diaphragm I (1) and diaphragm II (2) in sequence. The chamber A of the absolute pressure assembly has an adjustment spring (3) inside. The chamber A of the calculation assembly and the absolute pressure assembly both have vacuum bellows (4) inside. The chamber B of each of the three assemblies has a double-nozzle linkage valve, and the chamber C has a reset spring (5). The double-nozzle linkage valve structure is as follows: each of the diaphragm I and II has a baffle (6) fixed in the center. The two baffles (6) are linked to each other. The chamber B has a double nozzle inside. The baffle (6) and the double nozzle cooperate to form two linkage valves: valve I (7) and valve II (8). When the two linkage baffles (6) move to the limit position close to the chamber A / chamber C, valve I (7) / valve II (8) are fully open, valve II (8) / valve I (7) are closed, and the chamber B outputs the pressure of valve I (7) / valve II (8).

2. The power component performance testing device according to claim 1, characterized in that, The arithmetic component and the absolute pressure component together constitute the power component; the valve interfaces of valve I (7) of the arithmetic and absolute pressure components are connected in parallel to form detection interface a, the valve interfaces of valve II (8) are connected in parallel to form detection interface b, the vents of cavity A, B, and C of the arithmetic component are connected in parallel to form detection interface c, the vent of vacuum bellows (4) of the arithmetic component forms detection interface d, and the vents of cavity A, B, and C of the absolute pressure component are connected in parallel to form detection interface e.

3. The power component performance testing device according to claim 2, characterized in that, Detection interface a is connected to the atmospheric altitude simulation component, detection interface b is connected to the target pressure simulation component, detection interface c is connected to valve II (8) of the product absolute pressure component, the cavity B and C vents of the product absolute pressure component are connected in parallel and then connected to detection interface d, and the cavity A vent and valve interface of valve I (7) of the product absolute pressure component are connected in parallel and then connected to detection interface e.

4. The power component performance testing device according to claim 3, characterized in that, A pressure transmitter is installed at detection interface b, pressure transmitter 1 is installed between detection interfaces c and d, pressure transmitter 2 is installed at detection interface d, and pressure transmitter 3 is installed at detection interface e.

5. The power component performance testing device according to claim 4, characterized in that, Each pressure transmitter is equipped with a differential pressure digital display.

6. The power component performance testing device according to claim 3, characterized in that, The atmospheric altitude simulation component includes an atmospheric gas chamber. One end of the atmospheric gas chamber is connected to the detection interface a, and the other end is connected to a gas source branch and a vacuum branch connected in parallel. A regulating valve A3 is installed on the gas source branch and is connected to the gas source. A regulating valve A2 and a vacuum pump M1 are connected in series on the vacuum branch. A vacuum gauge is installed at the detection interface a.

7. The power component performance testing device according to claim 3, characterized in that, The target pressure simulation component includes a coarse air filter (9), a regulating valve A1, a precision air filter (10), and a pressure reducer (11) connected in series. The pressure reducer (11) is connected to the detection interface b, and the coarse air filter (9) is connected to the air source.

8. A testing method based on the power component performance testing device according to any one of claims 1-7, characterized in that, include: Step 1: Open regulating valve A3; Step 2: Control the opening of regulating valve A1 and adjust the pressure at detection interface b to the target pressure value; Step 3: Start vacuum pump M1; Step 4: Control the opening of regulating valve A2 to obtain the vacuum degree corresponding to each atmospheric altitude; Step 5: Record the target pressure value and the readings of pressure transmitters 1 to 3 corresponding to the atmospheric altitude, and complete the corresponding pressure regime check of the power components.

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