CN212963876U - Test device for suppressing aircraft engine accessory shell - Google Patents
Test device for suppressing aircraft engine accessory shell Download PDFInfo
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- CN212963876U CN212963876U CN202021514321.0U CN202021514321U CN212963876U CN 212963876 U CN212963876 U CN 212963876U CN 202021514321 U CN202021514321 U CN 202021514321U CN 212963876 U CN212963876 U CN 212963876U
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Abstract
The utility model provides a pair of test device that aircraft engine annex casing was suppressed, fuel oil system, air system, observing and controlling system and rack can realize high-pressure withstand voltage test, leak test, circulation supply pressure test and air tightness test. The high-pressure gas drive pump is used as a high-pressure implementation mode, the pneumatic diaphragm pump is used as an initial large-flow oil supply implementation mode, and the high-pressure gas drive pump has the characteristics of safety in operation, easiness in operation, energy conservation, small heat generation and coverage of all pressure resistance test methods. The pressure regulation and the turn-off control of the fuel system adopt a pneumatic control scheme. The design can effectively reduce the safety risk, improve the system integration level and reduce the cost. The utility model provides a test device has satisfied experimental requirement and has ensured the safety of whole in-process of suppressing simultaneously.
Description
Technical Field
The utility model relates to an aeronautical equipment detects technical field, especially relates to a test device that aircraft engine annex casing was suppressed.
Background
Aircraft engine accessories require compression testing of the housing of the accessory during design, manufacture and periodic refurbishment. Whether the shell can normally work and be installed or not is detected in the test purpose, and the test method comprises four steps: high-pressure withstand test; performing a leakage test; cyclic pressure supply test; and (5) performing air tightness test. The existing test device can not simultaneously meet the four test methods, and is used for manual voltage regulation and timer timing. For example, when a test method of high-pressure oil supply and low-pressure oil supply is carried out, oil is supplied by using a manual pump, and the high pressure and the low pressure are regulated by a pressure regulating valve; when a pressure drop test is carried out, oil is supplied to the shell, the pressure is regulated to a required pressure value, the pressure source is cut off, timing is carried out, and the pressure drop value is calculated after the time is up to judge whether the requirement is met; the circulating voltage supply controls the switching between high voltage and low voltage through a manual reversing knob, and the high voltage and the low voltage are respectively timed; when the air tightness test is carried out, a manual pressure reducing valve is used for regulating pressure, and the shell is immersed into the right groove to observe air bubbles.
The existing devices also have the following disadvantages: the device can not realize various tests on the same device, has larger volume, is relatively dispersed and is not suitable for various accessories; the pressure adjustment and the pressure release are manual, the operation difficulty is high, the time consumption for manual oil injection of the shell with large volume is long, and the operation is difficult; and manual control and timing are required when performing pressure drop tests and circulating pressure supply.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a test device that aircraft engine annex casing was suppressed for solve the technical problem who exists among the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme.
A test device for suppressing an accessory shell of an aircraft engine comprises a fuel oil system, an air system, a measurement and control system and a rack;
the fuel system comprises an oil tank assembly and a pneumatic diaphragm pump which are mutually connected through pipelines, and a low-pressure injection assembly, a medium-pressure injection assembly and a high-pressure injection assembly which are mutually connected in parallel and are used for loading pressure on an external part to be tested; the low-pressure injection assembly, the medium-pressure injection assembly and the high-pressure injection assembly are respectively connected with a pneumatic diaphragm pump pipeline through a first gas-liquid booster pump, a second gas-liquid booster pump and a third gas-liquid booster pump;
the air system comprises a factory air source, a filtering pressure reducing valve and a pressure supply assembly which are sequentially connected through pipelines, wherein the pressure supply assembly comprises a diaphragm pump pressure supply branch, a low-pressure supply branch, a medium-pressure supply branch and a high-pressure supply branch which are mutually connected in parallel; the pressure supply branch, the low-pressure supply branch, the medium-pressure supply branch and the high-pressure supply branch of the diaphragm pump are also respectively connected with a pneumatic diaphragm pump, a first gas-liquid booster pump, a second gas-liquid booster pump and a third gas-liquid booster pump through pipelines; the air system also comprises a pressure control branch which is connected between a factory air source and the filtering and reducing valve and comprises a nitrogen air source, a nitrogen reducing valve, an eighth electromagnetic directional valve and a fourth pressure transmitting structure which are sequentially connected through pipelines;
the measurement and control system is respectively electrically connected with the fuel system and the air system, and the rack is used for accommodating and supporting the fuel system and the air system.
Preferably, the first and second electrodes are formed of a metal,
the low pressure injection assembly further comprises: the first check valve, the first throttle valve, the first filter and the first pressure transmitting structure are sequentially connected through pipelines; the first one-way valve is also connected with a first gas-liquid booster pump pipeline;
the medium pressure injection assembly further comprises: the second check valve, the second throttle valve, the second filter and the second pressure transmitting structure are sequentially connected through pipelines; the second one-way valve is also connected with a second gas-liquid booster pump pipeline;
the high pressure injection assembly further comprises: the third one-way valve, the third throttle valve, the third filter and the third pressure transmitting structure are sequentially connected through pipelines; the third one-way valve is also connected with a third gas-liquid booster pump pipeline;
the diaphragm pump supplies to press the branch road to include: the first manual reducing valve, the first electromagnetic directional valve and the first pressure gauge are connected in sequence;
the low pressure supplies the pressure branch road to include: the second manual pressure reducing valve, the second electromagnetic reversing valve and the second pressure gauge are connected in sequence;
the medium voltage supply branch includes: the third manual pressure reducing valve, the third electromagnetic directional valve and the third pressure gauge are sequentially connected;
the high pressure supply branch includes: a fourth manual pressure reducing valve, a fourth electromagnetic directional valve and a fourth pressure gauge which are connected in sequence.
Preferably, the low pressure injection assembly further comprises: a fourth throttle valve connected between the first filter and the first throttle valve; the first pneumatic shutoff valve is connected between the first one-way valve and the first throttling valve; the first safety valve is connected with the pipeline of the first gas-liquid booster pump and is also connected with the first pneumatic shutoff valve in parallel;
the medium pressure injection assembly further comprises: a fifth throttle valve connected between the second filter and the second throttle valve; a second air control shutoff valve connected between the second one-way valve and the second throttle valve; the second safety valve is connected with the second gas-liquid booster pump pipeline and is also connected with the second gas-control shutoff valve in parallel;
the high pressure injection assembly further comprises: a sixth throttle valve connected between the third filter and the third throttle valve; a third pneumatic control shutoff valve connected between the third one-way valve and the third throttle valve; the third safety valve is connected with the pipeline of the third gas-liquid booster pump and is also connected with the third gas-control shutoff valve in parallel;
the air system also comprises a pressure relief assembly which is connected with the pressure supply assembly in parallel, and the pressure relief assembly comprises a low-pressure relief branch, a medium-pressure relief branch and a high-pressure relief branch which are connected with each other in parallel; the low-pressure relief branch, the medium-pressure relief branch and the high-pressure relief branch are further connected with a first pneumatic control shutoff valve, a second pneumatic control shutoff valve and a third pneumatic control shutoff valve respectively.
Preferably, the pressure relief assembly further comprises a fifth manual pressure relief valve, and the low-pressure relief branch, the medium-pressure relief branch and the high-pressure relief branch are connected in parallel and then connected in series with the fifth manual pressure relief valve;
the low-pressure relief branch is provided with a fifth electromagnetic directional valve, the medium-pressure relief branch is provided with a sixth electromagnetic directional valve, and the high-pressure relief branch is provided with a seventh electromagnetic directional valve.
Preferably, the air system further comprises a control cabinet, the control cabinet is provided with a positive pressure branch, one end of the positive pressure branch is connected between the factory air source and the filtering and pressure reducing valve, and the other end of the positive pressure branch is provided with a fourth one-way valve; the positive pressure branch is also provided with a seventh manual reducing valve which is connected with the fourth one-way valve in series; the first electromagnetic directional valve, the second electromagnetic directional valve, the third electromagnetic directional valve, the fourth electromagnetic directional valve, the fifth electromagnetic directional valve, the sixth electromagnetic directional valve and the seventh electromagnetic directional valve are positioned in the control cabinet.
Preferably, the first pressure transmitting structure comprises a first pressure transmitter and a first needle valve which are connected with each other, and a first pressure measuring probe connected between the first pressure transmitter and the first needle valve; the second pressure transmitting structure comprises a second pressure transmitter and a second needle valve which are connected with each other, and a second pressure measuring probe which is connected between the second pressure transmitter and the second needle valve; the third pressure transmitting structure comprises a third pressure transmitter and a third needle valve which are connected with each other, and a third pressure measuring probe which is connected between the third pressure transmitter and the third needle valve; the fourth pressure transmitting structure comprises a fourth pressure transmitter and a fourth needle valve which are connected with each other, and a fourth pressure measuring probe which is connected between the fourth pressure transmitter and the fourth needle valve.
Preferably, the air system further comprises a blowing branch mutually connected in parallel with the pressure supply assembly, the blowing branch comprising a sixth manual pressure reducing valve and an air gun mutually connected in series.
Preferably, the stand comprises:
the oil tank area is used for accommodating the oil tank assembly;
the test protection area is used for accommodating an external part to be tested and is provided with a protection cover and an observation window;
the pump group area is used for accommodating a fuel system and an air system;
and the control area is used for accommodating the control system.
Preferably, the control system includes Siemens s7-1200 control platform.
By the above-mentioned the embodiment of the utility model provides a technical scheme can find out, the utility model provides a pair of aircraft engine annex casing suppresses test device, fuel oil system, air system, observing and controlling system and rack can realize high-pressure withstand voltage test, leak test, circulation pressure supply test and air tightness test. The high-pressure gas drive pump is used as a high-pressure implementation mode, the pneumatic diaphragm pump is used as an initial large-flow oil supply implementation mode, and the high-pressure gas drive pump has the characteristics of safety in operation, easiness in operation, energy conservation, small heat generation and coverage of all pressure resistance test methods. The pressure regulation and the turn-off control of the fuel system adopt a pneumatic control scheme. The design can effectively reduce the safety risk, improve the system integration level and reduce the cost. The utility model provides a test device has satisfied experimental requirement and has ensured the safety of whole in-process of suppressing simultaneously.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of a test device for testing the pressing of an aircraft engine accessory casing according to the present invention;
FIG. 2 is a left side view of an aircraft engine accessory casing crush test apparatus provided by the present invention;
FIG. 3 is a top view of an aircraft engine accessory casing crush test apparatus provided by the present invention;
FIG. 4 is a schematic diagram of a fuel system of a test apparatus for testing the pressurization of an aircraft engine accessory housing in accordance with the present invention;
FIG. 5 is a schematic diagram of an air system of a test apparatus for aircraft engine accessory case pressurization provided by the present invention;
fig. 6 is a logic block diagram of a system architecture of a test device for suppressing an aircraft engine accessory casing according to the present invention.
In the figure:
11. the system comprises a first gas-liquid booster pump 111, a first check valve 112, a first throttle valve 113, a first filter 114, a first pressure transmitter 115, a first needle valve 116, a first pressure measuring probe 117, a fourth throttle valve 118, a first pneumatic shutoff valve 119 and a first safety valve;
12. the second gas-liquid booster pump 121, the second check valve 122, the second throttle valve 123, the second filter 124, the second pressure transmitter 125, the second needle valve 126, the second pressure measuring probe 127, the fifth throttle valve 128, the second pneumatic shutoff valve 129 and the second safety valve;
13. a third gas-liquid booster pump 131, a third check valve 132, a third throttle valve 133, a third filter 134, a third pressure transmitter 135, a third needle valve 136, a third pressure measuring probe 137, a sixth throttle valve 138, a third pneumatic shutoff valve 139 and a third safety valve;
14. a pneumatic diaphragm pump 141, an oil tank 142, a ball valve 143, a liquid level sensor 144, a temperature sensor;
211. a first manual pressure reducing valve 212, a first electromagnetic directional valve 213, a first pressure gauge;
221. a second manual pressure reducing valve 222, a second electromagnetic directional valve 223, a second pressure gauge;
231. a third manual pressure reducing valve 232, a third electromagnetic directional valve 233 and a third pressure gauge;
241. a fourth manual pressure reducing valve 242, a fourth electromagnetic directional valve 243, a fourth pressure gauge;
251. a fifth electromagnetic directional valve 252, a sixth electromagnetic directional valve 253, a seventh electromagnetic directional valve 254, a fifth manual pressure reducing valve;
261. a nitrogen gas source 262, a nitrogen pressure reducing valve 263, an eighth electromagnetic directional valve 264, a fourth pressure transmitter 265, a fourth needle valve 266, a fourth pressure measuring probe 267 and a second stop valve;
271. plant air 272, filtered pressure relief valve 273, first check valve 274, control cabinet 275, fourth check valve 276, seventh manual pressure relief valve;
281. a sixth manual pressure relief valve 282, air gun;
3. the test bench comprises a bench 31, an oil tank area 32, a test protection area 33, a pump group area 34 and a control area.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be given by way of example only with reference to the accompanying drawings, and the embodiments are not limited thereto.
Referring to fig. 1 to 6, the utility model provides a test device for the pressurization of an aircraft engine accessory shell, which comprises a fuel system, an air system, a measurement and control system and a rack 3;
as shown in fig. 4 and 5, the fuel system includes a tank assembly and a pneumatic diaphragm pump 14 connected to each other by a pipe, and a low pressure injection assembly, a medium pressure injection assembly, and a high pressure injection assembly connected in parallel to each other, for applying pressure (oil pressure, air pressure) to an external component to be measured; the low-pressure injection assembly, the medium-pressure injection assembly and the high-pressure injection assembly are respectively connected with a pneumatic diaphragm pump 14 through pipelines of a first gas-liquid booster pump 11, a second gas-liquid booster pump 12 and a third gas-liquid booster pump 13;
the air system comprises a factory air source 271, a filtering pressure reducing valve 272 and a pressure supply assembly which are sequentially connected through pipelines, wherein air in the factory air source 271 is filtered and reduced in pressure to control the actions of various valves of a hydraulic loop and the oil supply pressure of a gas-liquid booster pump and a pneumatic diaphragm pump 14. The pressure supply assembly comprises a diaphragm pump pressure supply branch, a low-pressure supply branch, a medium-pressure supply branch and a high-pressure supply branch which are connected in parallel; the pressure supply branch, the low-pressure supply branch, the medium-pressure supply branch and the high-pressure supply branch of the diaphragm pump are also respectively connected with a pneumatic diaphragm pump 14, a first gas-liquid booster pump 11, a second gas-liquid booster pump 12 and a third gas-liquid booster pump 13 through pipelines; the air system further comprises a pressure control branch and a stop valve 273 which are connected between a factory air source 271 and a filtering and pressure reducing valve 272, and the pressure control branch and the stop valve comprise a nitrogen air source 261, a second stop valve 267, a nitrogen pressure reducing valve 262, an eighth electromagnetic directional valve 263 and a fourth pressure transmitting structure which are sequentially connected through pipelines along the fluid transmission direction;
the measurement and control system is electrically connected with the fuel system and the air system respectively and used for controlling the on/off of each pump and each electromagnetic valve, and the rack is used for accommodating, fixing and supporting the fuel system and the air system.
The utility model discloses a test device can select simultaneously or separately to realize following experiment:
a high-pressure withstand test, which is to check whether the part to be tested has cracks and defects, inject high pressure into the part to be tested through a high-pressure injection assembly, and observe whether permanent deformation exists;
a leakage test is carried out, the sealing condition of a joint surface is checked, low pressure is supplied to the part to be tested through a low-pressure injection assembly, and judgment is carried out through a pressure drop value in a set time;
the cyclic pressure supply test is carried out by providing a high pressure injection assembly and a low pressure injection assembly, or a medium pressure injection assembly and a low pressure injection assembly, or a high pressure injection assembly and a medium pressure injection assembly, carrying out transformation with pressure difference, and maintaining for a certain time under the two pressures. And checking for leakage;
and in the air tightness test, air is supplied to the part to be tested through an air system, and the part assembly to be tested is immersed in an oil groove to observe the quantity of bubbles.
It should be understood that the pressure values of the low pressure injection assembly, the medium pressure injection assembly and the high pressure injection assembly in the fuel system are set according to the needs of the test, which is realized by arranging the gas-liquid booster pump according to the prior art, and the low pressure, the medium pressure and the high pressure in the terms only represent the pressure value relationship among the three, and do not form the specific limitation on the pressure value.
The utility model provides an in the embodiment, pneumatic diaphragm pump 14 possesses 4 meters from inhaling the ability, is used for quick oil charge at the initial stage of the withstand voltage test of the part that awaits measuring for example, and it still has the advantage that operation safety, easy operation, energy-conservation, generate heat for a short time, cover all withstand voltage test methods.
The pressure control branch is used for adjusting air pressure by introducing nitrogen into the pressure supply assembly, wherein the precise nitrogen pressure reducing valve 262 is used for adjusting and controlling the pressure, the eighth electromagnetic directional valve 263 is used for controlling the on-off of the air path, the fourth pressure transmitting structure is used for accurately measuring the air supply pressure, the gas pressure (0-1) MPa is continuously adjustable, and the adjusting precision is +/-0.01 MPa.
Further, as shown in figures 4 and 5,
the first gas-liquid booster pump 11, the second gas-liquid booster pump 12 and the third gas-liquid booster pump 13 all adopt high-performance gas-driven pumps.
The low pressure injection assembly further comprises: a first check valve 111, a first throttle valve 112, a first filter 113 and a first pressure transmitting structure which are sequentially connected by pipelines along the fluid transmission direction; the first one-way valve 111 is also connected with the first gas-liquid booster pump 11 through a pipeline;
the medium pressure injection assembly further comprises: a second check valve 121, a second throttle valve 122, a second filter 123 and a second pressure transmitting structure which are sequentially connected by pipelines along the fluid conducting direction; the second one-way valve 121 is also connected with the second gas-liquid booster pump 12 through a pipeline;
the high pressure injection assembly further comprises: a third check valve 131, a third throttle valve 132, a third filter 133 and a third pressure transmitting structure which are sequentially connected by pipes in the fluid conducting direction; the third one-way valve 131 is also connected with a third gas-liquid booster pump 13 through a pipeline;
the diaphragm pump supplies to press the branch road to include: the first manual pressure reducing valve 211, the first electromagnetic directional valve 212 and the first pressure gauge 213 are sequentially connected in the fluid conduction direction;
the low pressure supplies the pressure branch road to include: a second manual pressure reducing valve 221, a second electromagnetic directional valve 222 and a second pressure gauge 223 which are connected in sequence along the fluid conduction direction;
the medium voltage supply branch includes: a third manual pressure reducing valve 231, a third electromagnetic directional valve 232 and a third pressure gauge 233 which are connected in sequence along the fluid conduction direction;
the high pressure supply branch includes: and the fourth manual pressure reducing valve 241, the fourth electromagnetic directional valve 242 and the fourth pressure gauge 243 are sequentially connected in the fluid conduction direction.
Further, as shown in fig. 4 and 5, the low pressure injection assembly further includes: a fourth throttle valve 117 interposed between the first filter 113 and the first throttle valve 112; a first pneumatic shutoff valve 118 interposed between the first check valve 111 and the first throttle valve 112; a first safety valve 119 connected to the first gas-liquid booster pump 11 in a pipeline and further connected to the first pneumatic shutoff valve 118 in parallel;
the medium pressure injection assembly further comprises: a fifth throttle valve 127 interposed between the second filter 123 and the second throttle valve 122; a second pneumatic shutoff valve 128 interposed between the second check valve 121 and the second throttle valve 122; a second relief valve 129 connected in line with the second gas-liquid booster pump 12 and also connected in parallel with the second gas-operated shutoff valve 128;
the high pressure injection assembly further comprises: a sixth throttle valve 137 interposed between the third filter 133 and the third throttle valve 132; a third pneumatic shutoff valve 138 interposed between the third check valve 131 and the third throttle valve 132; a third safety valve 139 which is connected to the third gas-liquid booster pump 13 through a pipeline and is also connected to the third pneumatic shutoff valve 138 in parallel;
the air system also comprises a pressure relief assembly which is connected with the pressure supply assembly in parallel, and the pressure relief assembly comprises a low-pressure relief branch, a medium-pressure relief branch and a high-pressure relief branch which are connected with each other in parallel; the low, medium and high pressure relief branches are also connected to first, second and third pneumatic shut-off valves 118, 128 and 138, respectively.
Further, the pressure relief assembly is also provided with a fifth manual pressure relief valve 254, and the low-pressure relief branch, the medium-pressure relief branch and the high-pressure relief branch are connected in parallel and then connected in series with the fifth manual pressure relief valve 254;
the low-pressure relief branch has a fifth electromagnetic directional valve 251, the medium-pressure relief branch has a sixth electromagnetic directional valve 252, and the high-pressure relief branch has a seventh electromagnetic directional valve 253.
In the embodiment provided by the utility model, the preferred three-way switching-over valve of each electromagnetic reversing valve.
Further, as shown in fig. 5, the air system further includes a control cabinet 274, which is a positive pressure explosion-proof control cabinet having a positive pressure branch, one end of the positive pressure branch is connected between the plant air source 271 and the filtering and pressure reducing valve, and the other end of the positive pressure branch has a fourth check valve 275; the positive pressure branch also has a seventh manual pressure reducing valve 276 in series with the fourth check valve 275; the positive pressure branch circuit has the function of keeping the control cabinet in a positive pressure state all the time, and preventing oil and gas paths from cracking and hurting people; the first electromagnetic directional valve 212, the second electromagnetic directional valve 222, the third electromagnetic directional valve 232, the fourth electromagnetic directional valve 242, the fifth electromagnetic directional valve 252, the sixth electromagnetic directional valve 262 and the seventh electromagnetic directional valve 272 are located in the control cabinet 274, and operation is convenient. The air system also has a first shut off valve 273 located between the filter relief valve 272 and the plant air supply 271.
Further, the first pressure transmitting structure includes a first pressure transmitter 114 and a first needle valve 115 connected to each other, and a first pressure measuring probe 116 connected between the first pressure transmitter 114 and the first needle valve 115; the second pressure transmitting structure comprises a second pressure transmitter 124 and a second needle valve 125 which are connected with each other, and a second pressure measuring probe 126 connected between the second pressure transmitter 124 and the second needle valve 125; the third pressure transmitting structure includes a third pressure transmitter 134 and a third needle valve 135 connected to each other, and a third pressure measuring probe 136 interposed between the third pressure transmitter 134 and the third needle valve 135; the fourth pressure transmitting structure includes a fourth pressure transmitter 264 and a fourth needle valve 265 connected to each other, and a fourth pressure measuring probe 266 connected between the fourth pressure transmitter 264 and the fourth needle valve 265.
The utility model provides an in the embodiment, the oil tank subassembly includes oil tank 141, and this oil tank 141 is open oil tank 141, installs level sensor 143 and temperature sensor 144, can observe liquid level and oil temperature through observing and controlling system (for example panel touch-sensitive screen) in real time, has height liquid level and high temperature alarm function. The oil tank 141 is also connected with a ball valve 142 for discharging oil during cleaning and maintenance, the oil liquid in the oil tank 141 can be completely discharged under the gravity, and the discharge port is not less than 200mm from the ground.
When fluid is full of, accomplish the gassing operation after, open the gas-liquid booster pump, gas-liquid booster pump outlet pressure is higher than diaphragm pump pressure, and the check valve is closed this moment, and high-pressure fluid passes through choke valve and filter entering by the test piece, according to the atmospheric pressure that requires to increase the gas-liquid booster pump gradually by the test piece, until pressure stable to the specified value, the pressure test this moment has following concentrated condition:
the case was observed for permanent deformation and leakage under a predetermined pressure.
Closing the needle valve, starting a timer, automatically recording the pressure drop value within the set time, and displaying the curve of the pressure change along with the time and the pressure drop value by using a touch screen.
Switching between high pressure and low pressure is controlled by on-off of a pneumatic control shut-off valve, cycle times are input on a touch screen according to test requirements, high-low pressure cycle test is automatically carried out, and leakage is checked after the cycle is finished. The needle valve is used for releasing pressure after the test is finished.
After the emergency stop button of the front panel is pressed, the air control shut-off valve is opened, and meanwhile, the pump stops supplying air, so that pressure relief can be carried out at the highest speed. The safety valve is used for protecting the overpressure of the system. The three-way pressure supply module can operate independently or simultaneously without interference. The oil filter is used for filtering outlet fuel oil, and the filtering precision is 10 microns. And all components of the three injection assemblies except the pump and the filter are concentrated in one oil circuit block, so that the structure is compact and the maintenance is easy.
And after the system reaches the test pressure, the system is in a pressure maintaining state without heat generation, and the system is energy-saving and environment-friendly.
In the preferred embodiment of the present invention, the air system further comprises an air blowing branch connected in parallel with the pressure supply assembly, the air blowing branch comprising a sixth manual pressure reducing valve 281 and an air gun 282 connected in series, the air gun 282 being used for blowing the tested part before and after the test.
In a preferred embodiment provided by the present invention, as shown in fig. 1 to 3, the stage 3 includes:
the oil tank area 31 is used for installing oil tank components, is independent, and is convenient to clean, replace media and maintain and the like;
a test guard area 32 for securing an external component to be tested, the test guard area having a shield and an observation window;
a pump block area 33 for installing a fuel system and an air system;
and a control area 34 for installing a set control system.
In the preferred embodiment provided by the invention, the control system is mainly used for electric power distribution of the test bed, circuit overload protection, start-stop control and interlock protection of electrical equipment, and the output of each system state parameter through the display equipment. It employs high speed, high performance modular hardware. The design follows the principles of modular, extensible, easily scalable and easily integrated open architecture design.
The main control module is a Siemens s7-1200 platform, and application software is developed on a Siemens touch screen. The data of the sensor can be collected and displayed in real time, and the parameter curve can be drawn according to the requirement of a client. And monitoring the running state of the test bed, and giving necessary alarm prompt information when the system fails. The channel is provided with a signal conditioning unit as required to perform necessary processing on the signal, such as hardware filtering, isolation, amplification, shaping and the like, so that the channel can obtain a stable and reliable signal which meets the frequency response requirement. The signal line adopts the shielded wire. In order to prevent the influence of signal interference on the data acquisition and processing system, the power supply of the data acquisition and processing system and the sensor is isolated.
The data acquisition system can carry out online calibration on the sensor.
Recording the running time of main components (such as a booster pump and a filter).
The core of the measurement and control console is Siemens PLC, human-computer interaction is carried out through a touch screen, and configuration information is as follows:
TABLE 3-1 hardware configuration Table
The software related to the test bed comprises PLC software, upper computer software and the like. The main relevant to the user is the upper computer software which is a man-machine interactive window. The upper computer software comprises a login interface, a manual operation interface, an automatic operation interface, measurement information query, an online measurement interface, equipment use condition record, personnel authorization, test data query, alarm query and the like.
The software system provides a simulation monitoring interface, the parameter display form is diversified, the virtual instrument control with various functions is provided, the parameters can be displayed in real time in a numerical value and curve mode, and the system has the functions of parameter limitation and state alarm.
The calibration device has the function of calibrating a data acquisition channel of a test piece, manually applies a calibration signal, and automatically records data and calculates errors and linearity by a computer.
The software processes, stores and transmits the signals while collecting the signals, and receives and displays the signals in real time. The data processing modes in the software comprise curve display processing, digital display processing, table processing, virtual instrument and record browsing mode display processing and the like.
To sum up, the utility model provides a pair of test device that aircraft engine annex casing was suppressed, fuel oil system, air system, observing and controlling system and rack can realize high-pressure withstand voltage test, leak test, circulation supply pressure test and air tightness test. The high-pressure gas drive pump is used as a high-pressure implementation mode, the pneumatic diaphragm pump is used as an initial large-flow oil supply implementation mode, and the high-pressure gas drive pump has the characteristics of safety in operation, easiness in operation, energy conservation, small heat generation and coverage of all pressure resistance test methods. The pressure regulation and the turn-off control of the fuel system adopt a pneumatic control scheme. The design can effectively reduce the safety risk, improve the system integration level and reduce the cost. The utility model provides a test device has satisfied experimental requirement and has ensured the safety of whole in-process of suppressing simultaneously.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A test device for suppressing an accessory shell of an aircraft engine is characterized by comprising a fuel oil system, an air system, a measurement and control system and a rack;
the fuel system comprises an oil tank assembly and a pneumatic diaphragm pump which are mutually connected through pipelines, and a low-pressure injection assembly, a medium-pressure injection assembly and a high-pressure injection assembly which are mutually connected in parallel and are used for loading pressure on an external part to be tested; the low-pressure injection assembly, the medium-pressure injection assembly and the high-pressure injection assembly are respectively connected with the pneumatic diaphragm pump through a first gas-liquid booster pump, a second gas-liquid booster pump and a third gas-liquid booster pump;
the air system comprises a factory air source, a filtering pressure reducing valve and a pressure supply assembly which are sequentially connected through pipelines, wherein the pressure supply assembly comprises a diaphragm pump pressure supply branch, a low-pressure supply branch, a medium-pressure supply branch and a high-pressure supply branch which are mutually connected in parallel; the pressure supply branch, the low-pressure supply branch, the medium-pressure supply branch and the high-pressure supply branch of the diaphragm pump are also respectively connected with the pneumatic diaphragm pump, the first gas-liquid booster pump, the second gas-liquid booster pump and the third gas-liquid booster pump through pipelines; the air system also comprises a pressure control branch which is connected between the factory air source and the filtering and reducing valve and comprises a nitrogen air source, a nitrogen reducing valve, an eighth electromagnetic directional valve and a fourth pressure transmitting structure which are sequentially connected through pipelines;
the measurement and control system is respectively electrically connected with the fuel system and the air system, and the rack is used for accommodating and supporting the fuel system and the air system.
2. Testing device according to claim 1,
the low pressure injection assembly further comprises: the first check valve, the first throttle valve, the first filter and the first pressure transmitting structure are sequentially connected through pipelines; the first one-way valve is also connected with the first gas-liquid booster pump pipeline;
the medium pressure injection assembly further comprises: the second check valve, the second throttle valve, the second filter and the second pressure transmitting structure are sequentially connected through pipelines; the second one-way valve is also connected with the second gas-liquid booster pump pipeline;
the high pressure injection assembly further comprises: the third one-way valve, the third throttle valve, the third filter and the third pressure transmitting structure are sequentially connected through pipelines; the third one-way valve is also connected with the third gas-liquid booster pump pipeline;
the diaphragm pump supplies pressure branch road includes: the first manual reducing valve, the first electromagnetic directional valve and the first pressure gauge are connected in sequence;
the low-pressure supply branch includes: the second manual pressure reducing valve, the second electromagnetic reversing valve and the second pressure gauge are connected in sequence;
the medium voltage supply branch includes: the third manual pressure reducing valve, the third electromagnetic directional valve and the third pressure gauge are sequentially connected;
the high-pressure supply branch comprises: a fourth manual pressure reducing valve, a fourth electromagnetic directional valve and a fourth pressure gauge which are connected in sequence.
3. The testing device of claim 2, wherein the low pressure injection assembly further comprises: a fourth throttling valve connected between the first filter and the first throttling valve; a first pneumatic shutoff valve connected between the first check valve and the first throttle valve; the first safety valve is connected with the pipeline of the first gas-liquid booster pump and is also connected with the first pneumatic shutoff valve in parallel;
the medium pressure injection assembly further comprises: a fifth throttling valve connected between the second filter and the second throttling valve; a second pneumatic control shutoff valve connected between the second one-way valve and the second throttle valve; the second safety valve is connected with the second gas-liquid booster pump pipeline and is also connected with the second gas-control shutoff valve in parallel;
the high pressure injection assembly further comprises: a sixth throttling valve connected between the third filter and the third throttling valve; a third pneumatic control shutoff valve connected between the third one-way valve and the third throttle valve; the third safety valve is connected with the pipeline of the third gas-liquid booster pump and is also connected with the third gas-controlled shutoff valve in parallel;
the air system also comprises a pressure relief assembly which is connected with the pressure supply assembly in parallel, and the pressure relief assembly comprises a low-pressure relief branch, a medium-pressure relief branch and a high-pressure relief branch which are connected with each other in parallel; the low-pressure relief branch, the medium-pressure relief branch and the high-pressure relief branch are also respectively connected with the first pneumatic control shutoff valve, the second pneumatic control shutoff valve and the third pneumatic control shutoff valve.
4. The testing device of claim 3, wherein the pressure relief assembly further comprises a fifth manual pressure relief valve, and the low pressure relief branch, the medium pressure relief branch and the high pressure relief branch are connected in parallel and then connected in series with the fifth manual pressure relief valve;
the low-pressure relief branch is provided with a fifth electromagnetic directional valve, the medium-pressure relief branch is provided with a sixth electromagnetic directional valve, and the high-pressure relief branch is provided with a seventh electromagnetic directional valve.
5. The test rig according to claim 4, wherein the air system further comprises a control cabinet having a positive pressure branch that connects between the plant air supply and the filter and pressure relief valve at one end and a fourth one-way valve at the other end; the positive pressure branch is also provided with a seventh manual reducing valve which is connected with the fourth one-way valve in series; the first electromagnetic directional valve, the second electromagnetic directional valve, the third electromagnetic directional valve, the fourth electromagnetic directional valve, the fifth electromagnetic directional valve, the sixth electromagnetic directional valve and the seventh electromagnetic directional valve are positioned in the control cabinet.
6. The test device of claim 2, wherein the first pressure transmitting structure comprises a first pressure transmitter and a first needle valve connected to each other, and a first pressure probe connected between the first pressure transmitter and the first needle valve; the second pressure transmitting structure comprises a second pressure transmitter and a second needle valve which are connected with each other, and a second pressure measuring probe connected between the second pressure transmitter and the second needle valve; the third pressure transmitting structure comprises a third pressure transmitter and a third needle valve which are connected with each other, and a third pressure measuring probe which is connected between the third pressure transmitter and the third needle valve; the fourth pressure transmitting structure comprises a fourth pressure transmitter and a fourth needle valve which are connected with each other, and a fourth pressure measuring probe which is connected between the fourth pressure transmitter and the fourth needle valve.
7. The test device of any one of claims 1 to 6, wherein the air system further comprises a blow-off branch in parallel with the pressure supply assembly, the blow-off branch comprising a sixth manual pressure reduction valve and an air gun in series with each other.
8. Test device according to one of the claims 1 to 6, characterized in that the stand comprises:
a tank compartment for receiving the tank assembly;
the test protection area is used for accommodating an external part to be tested and is provided with a protection cover and an observation window;
the pump group area is used for accommodating the fuel system and the air system;
and the control area is used for accommodating the control system.
9. The testing device of claim 8, wherein the control system comprises a siemens s7-1200 control platform.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114061863A (en) * | 2021-10-11 | 2022-02-18 | 岭澳核电有限公司 | Complete spare part hydrostatic test system of nuclear power station finger casing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061863A (en) * | 2021-10-11 | 2022-02-18 | 岭澳核电有限公司 | Complete spare part hydrostatic test system of nuclear power station finger casing |
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