A fault simulation training device for overheat protection circuit of civil aviation air conditioning components

Abstract

The utility model provides a fault simulation training device for an overheat protection circuit of a civil aviation air conditioning component, comprising a stand body, a central console, and an air conditioning component overheat protection fault simulation circuit module comprising a dark box and a circuit panel; the dark box is connected to the central console in communication; the dark box includes an air conditioning component overheat protection fault simulation circuit, which includes a DC power supply, a thermal relay, a thermistor module, a reset switch module, and an overheat indication module; the DC power supply is connected to one end of the thermistor module via a coil of the thermal relay, the other end of the thermistor module is grounded, the reset switch module and the overheat indication module are respectively connected to the first make contact and the second make contact of the thermal relay; the circuit panel is provided with a connection schematic diagram corresponding to the fault simulation circuit and a plurality of fault measurement holes. The utility model can simulate various circuit fault points in the air conditioning component overheat protection fault simulation circuit module, and realize direct measurement of circuit faults.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, in particular to a fault simulation training device for an overheat protection circuit of a civil aviation air conditioning component. Background Art

[0002] According to the actual experience of civil aviation maintenance, the failure of the circuit components of various aircraft systems and the connection lines between components have always been a common and difficult failure in the maintenance front line, and the identification of aircraft system circuit schematics, line fault measurement and analysis, and standard line repair have always been the shortcomings of front-line maintenance personnel. Therefore, it is necessary to simulate the failure of aircraft system circuits through fault simulation training equipment to facilitate maintenance personnel to conduct troubleshooting training for aircraft system circuits. The overheat protection circuit of the air-conditioning component is one of the important circuits of civil aircraft, and the existing circuit troubleshooting training platform has a single circuit, and usually can only set a few simple and fixed faults by mechanical means. It is difficult to cover all fault points for the overheat protection circuit of a specific air-conditioning component, and the circuit needs to be disassembled and restored during the training process, resulting in complicated training operations and large loss of circuit components. Utility Model Content

[0003] The embodiment of the utility model provides a fault simulation training device for an overheat protection circuit of a civil aviation air conditioning component. Various circuit fault points can be simulated in an overheat protection fault simulation circuit module of the air conditioning component through a central control console, and direct measurement of circuit faults can be achieved through a fault measurement hole on a circuit panel without disassembling the circuit and restoring it, which helps to simplify training operations and reduce the loss of line components.

[0004] In order to solve the above technical problems, the embodiment of the utility model provides a fault simulation training device for an overheat protection circuit of a civil aviation air conditioning component, comprising a test stand body, a central control console and an air conditioning component overheat protection fault simulation circuit module;

[0005] The central console and the air conditioning component overheat protection fault simulation circuit module are both arranged on the platform body, and the air conditioning component overheat protection fault simulation circuit module includes a dark box and a circuit panel, and the dark box is communicatively connected with the central console;

[0006] The dark box includes an air-conditioning component overheat protection fault simulation circuit, and the air-conditioning component overheat protection fault simulation circuit includes a DC power supply, a thermal relay, a thermistor module, a reset switch module and an overheat indication module; the DC power supply is connected to one end of the thermistor module via the coil of the thermal relay, and the other end of the thermistor module is grounded, and the reset switch module and the overheat indication module are respectively connected to the first make contact and the second make contact of the thermal relay; the circuit panel is provided with a connection schematic diagram corresponding to the air-conditioning component overheat protection fault simulation circuit and a number of fault measurement holes.

[0007] As a preferred solution, the DC power supply is connected to the first end of the coil of the thermal relay, the second end of the coil of the thermal relay is connected to the common contact of the first make contact and connected to one end of the thermal switch module; the normally open contact of the first make contact is connected to the first end of the reset switch module, and the second end of the reset switch module is grounded; the first end of the overheat indication module is used to connect to an external power supply, the second end of the overheat indication module is connected to the normally open contact of the second make contact, and the common contact of the second make contact is grounded;

[0008] The circuit panel is provided with a reset button connected to the dark box, and the reset switch module is controlled by the reset button.

[0009] As a preferred embodiment, the thermal switch module includes a turbine inlet overheat switch unit, a component outlet overheat switch unit and a compressor outlet overheat switch unit; the DC power supply is connected to the first end of the turbine inlet overheat switch unit, the first end of the component outlet overheat switch unit and the first end of the compressor outlet overheat switch unit through the coil of the thermal relay, and the second end of the turbine inlet overheat switch unit, the second end of the component outlet overheat switch unit and the second end of the compressor outlet overheat switch unit are all grounded.

[0010] As a preferred solution, a diode is further connected between the first normally closed contact and the reset switch module, the normally open contact of the first normally closed contact is connected to the anode of the diode, and the cathode of the diode is connected to the first end of the reset switch module.

[0011] As a preferred solution, a jumper is further connected between the DC power supply and the first end of the coil of the thermal relay.

[0012] As a preferred solution, the overheat indication module is specifically an overheat indicator light.

[0013] As a preferred solution, the central console includes a host computer with a display.

[0014] As a preferred solution, it also includes a storage device, which is arranged on the stand body.

[0015] As a preferred solution, the air conditioning component overheat protection fault simulation circuit module is detachably mounted on the stand body by screws.

[0016] As a preferred solution, four universal wheels are provided at the bottom of the platform body, and each of the universal wheels is equipped with a locking mechanism.

[0017] Compared with the prior art, the beneficial effect of the embodiments of the utility model lies in that various circuit fault points can be simulated in the overheat protection fault simulation circuit module of the air-conditioning component through the central console, and the circuit fault can be directly measured through the fault measurement hole on the circuit panel without disassembling the circuit and restoring it, which helps to simplify practical training operations and reduce the loss of line components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the fault simulation training equipment of the overheat protection circuit of the civil aviation air conditioning component in the embodiment of the utility model;

[0019] Figure 2 It is a side view of a fault simulation training device for an overheat protection circuit of a civil aviation air conditioning component in an embodiment of the utility model;

[0020] Figure 3 It is a connection diagram of an air-conditioning component overheat protection fault simulation circuit in an embodiment of the utility model;

[0021] Among them, 1. the stand body; 2. the center console; 3. the air-conditioning component overheat protection fault simulation circuit module; 4. the storage device; 5. the universal wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 3 The embodiment of the utility model provides a fault simulation training device for an overheat protection circuit of a civil aviation air conditioning component, comprising a platform body 1, a central control console 2 and an air conditioning component overheat protection fault simulation circuit module 3;

[0024] The central console 2 and the air conditioning component overheat protection fault simulation circuit module 3 are both arranged on the platform body 1, and the air conditioning component overheat protection fault simulation circuit module 3 includes a dark box and a circuit panel, and the dark box is communicatively connected with the central console 2;

[0025] The dark box includes an air-conditioning component overheat protection fault simulation circuit, which includes a DC power supply, a thermal relay L1, a thermistor module, a reset switch module L2 and an overheat indication module L3; the DC power supply is connected to one end of the thermistor module via the coil of the thermal relay L1, and the other end of the thermistor module is grounded, and the reset switch module L2 and the overheat indication module L3 are respectively connected to the first make contact and the second make contact of the thermal relay L1; the circuit panel is provided with a connection schematic diagram corresponding to the air-conditioning component overheat protection fault simulation circuit and a number of fault measurement holes.

[0026] It is worth noting that the dark box in this embodiment includes various controllable components, thereby forming an air conditioning component overheat protection fault simulation circuit, which includes a DC power supply, a thermal relay L1, a thermistor module, a reset switch module L2 and an overheat indication module L3. It is worth noting that the thermistor module is in a normally open state when it is not overheated, and when the detection temperature of the thermistor module is higher than the preset temperature threshold, it will change from the normally open state to the closed state. The DC power output by the DC power supply is grounded through the coil of the thermal relay L1 and the thermistor module, so that the thermal relay L1 is energized and attracted, and the overheat indication module L3 is triggered to work, indicating that the current temperature of the air conditioning component is too high, and the overheat protection circuit of the air conditioning component will stop the component operation. At this time, the thermal relay L1 is grounded and locked in the overheat position through the reset switch module L2. After the air conditioning component cools down, the reset instruction of the reset switch module L2 is triggered, so that the thermal relay L1 is de-energized, indicating that the overheat protection circuit of the air conditioning component has returned to the standby state.

[0027] Furthermore, by communicating with the center console 2 through the dark box, the user can set a corresponding circuit fault on the center console 2, and then generate a corresponding control signal and send it to the dark box, so that the dark box simulates the fault at the corresponding position of the circuit according to the received control signal. Since the circuit panel is provided with a connection diagram corresponding to the air-conditioning component overheating protection fault simulation circuit and a number of fault measurement holes, the user can use a multimeter to directly insert the fault measurement hole to detect the simulated fault of the current circuit, analyze the simulated fault location and type, and then set the fault relief after marking the fault on the center console 2, and then use the multimeter again to measure whether the simulated fault phenomenon exists, thereby achieving the purpose of fault simulation training.

[0028] As a preferred solution, the DC power supply is connected to the first end X1 of the coil of the thermal relay L1, the second end X2 of the coil of the thermal relay L1 is connected to the common contact A2 of the first make contact and connected to one end of the thermal switch module; the normally open contact A1 of the first make contact is connected to the first end of the reset switch module L2, and the second end of the reset switch module L2 is grounded; the first end of the overheat indication module L3 is used to connect to an external power supply, the second end of the overheat indication module L3 is connected to the normally open contact B1 of the second make contact, and the common contact B2 of the second make contact is grounded;

[0029] The circuit panel is provided with a reset button connected to the dark box, and the reset switch module L2 is controlled by the reset button.

[0030] Specifically, this embodiment realizes that when the thermal relay L1 is powered on, the common contact A2 of the first dynamic contact contacts the normally open contact A1, so that the thermal relay L1 is grounded through the reset switch module L2 and locked in the overheating position, and can be powered off when the reset switch module L2 triggers the reset instruction, so as to simulate the air-conditioning component overheat protection circuit to restore the standby state, and at the same time, the common contact B2 of the second dynamic contact contacts the normally open contact B1, so that the overheating indication module L3 works by grounding the second dynamic contact. When the thermal relay L1 is not powered on, the common contact A2 of the first dynamic contact contacts the normally closed contact A3, and the common contact B2 of the second dynamic contact contacts the normally closed contact B3.

[0031] Furthermore, a reset button connected to the dark box is provided on the circuit panel in this embodiment. By pressing the reset button, a reset signal can be sent to the dark box, so that the dark box controls the reset switch module L2 to trigger a reset instruction.

[0032] As a preferred embodiment, the thermal switch module includes a turbine inlet overheat switch unit L5, a component outlet overheat switch unit L7 and a compressor outlet overheat switch unit L6; the DC power supply is connected to the first end of the turbine inlet overheat switch unit L5, the first end of the component outlet overheat switch unit L7, and the first end of the compressor outlet overheat switch unit L6 through the coil of the thermal relay L1, and the second end of the turbine inlet overheat switch unit L5, the second end of the component outlet overheat switch unit L7 and the second end of the compressor outlet overheat switch unit L6 are all grounded.

[0033] In this embodiment, the thermistor module includes a turbine inlet overheating switch unit L5, a component outlet overheating switch unit L7, and a compressor outlet overheating switch unit L6 connected in parallel, so that when any thermistor detects that the temperature at the corresponding detection position is too high, the thermal relay L1 can be energized and pulled in, simulating the triggering of the protection mechanism of the air conditioning component overheating protection circuit. It can be understood that the detection temperature thresholds corresponding to different thermistors are different. For example, the detection temperature threshold of the turbine inlet overheating switch unit L5 is 210℉ / 99℃, the detection temperature threshold of the component outlet overheating switch unit L7 is 250℉ / 121℃, and the detection temperature threshold of the compressor outlet overheating switch unit L6 is 390℉ / 198℃.

[0034] As a preferred solution, a diode is further connected between the first normally closed contact and the reset switch module L2, the normally open contact A1 of the first normally closed contact is connected to the anode of the diode, and the cathode of the diode is connected to the first end of the reset switch module L2.

[0035] As a preferred solution, a trip switch L8 is further connected between the DC power supply and the first end of the coil of the thermal relay L1.

[0036] In this embodiment, when the detected temperature of the thermal switch module is higher than the preset temperature threshold, it will change from the normally open state to the closed state, and the DC power output by the DC power supply is grounded through the above-mentioned jumper L8, the coil of the thermal relay L1 and the thermal switch module, so that the thermal relay L1 is energized and attracted. Furthermore, the circuit panel in this embodiment is provided with a jumper control button connected to the dark box, and the above-mentioned jumper L8 is controlled by the jumper control button. By pressing the jumper control button, a jumper control signal can be sent to the dark box, so that the dark box controls the jumper L8 to open or close.

[0037] Preferably, this embodiment refers to the overheat protection circuit of the air-conditioning component of the B737NG model, and adopts a 28V DC power supply as the DC power supply of the overheat protection fault simulation circuit of the air-conditioning component.

[0038] As a preferred solution, the overheat indication module L3 is specifically an overheat indicator light.

[0039] In this embodiment, the overheat indication module L3 is specifically an overheat indicator light, thereby simulating a PACK light in an actual civil aircraft.

[0040] As an optional embodiment, Figure 3 As shown, the fault point of the air conditioning component overheat protection fault simulation circuit in this embodiment can be set at the following positions:

[0041] (1) They are respectively set on the line between the jumper L8, the DC power supply and the thermal relay L1, namely, point G1 and point G2;

[0042] (2) are respectively arranged on the coil, the first make contact and the second make contact of the thermal relay L1, namely, point G3, point G4, point G5, point G6 and point G7;

[0043] (3) They are respectively arranged on the circuit between the thermal relay L1 and the thermal switch module, namely, point G8, point G9, point G10, point G11, point G12, point G13, point G14 and point G15;

[0044] (4) Set in the thermal switch module, namely, point G16, point G17, point G18, point G19, point G20, point G21, point G22, point G23 and point G24;

[0045] (5) Set on the ground side circuit of the thermal switch module, namely, points G25, G26 and G27;

[0046] (6) are respectively arranged on the line between the overheat indication module L3, the thermal relay L1 and the overheat indication module L3, namely, point G28, point G29 and point G30;

[0047] (7) It is set on the ground side circuit of the second make contact, that is, point G31.

[0048] The fault setting point in this embodiment may include any one or more of the above-mentioned points where a fault can be set, which will not be described in detail here.

[0049] As a preferred solution, the central console 2 includes a host computer with a display.

[0050] It is worth noting that after the central console 2 of this embodiment is turned on, the administrator system can be entered to complete the teacher information input and related settings, and then the teacher system can be entered to complete the student information input and related settings (for example, setting the test or training questions and going online), and then the student system can be entered to start training or examination (instructing the student to measure the relevant circuit to determine the fault point, marking the fault on the relevant circuit diagram on the touch control screen of the central console 2, so that the fault is eliminated (if necessary), and the test papers are submitted together after all students have completed (or automatically end when the time is up), and finally the system automatically evaluates the score and records and displays it.

[0051] The central control software configured in the central control station 2 of this embodiment mainly includes three parts: the instructor control system, the student operating system, and the resource station. It can carry out single-device training or simultaneous training of multiple devices according to the actual situation, and has high flexibility. It has many functions such as data information query, teacher and student account management, test and training fault question setting, fault point marking and fault elimination, and automatic system evaluation of scores.

[0052] Optionally, the fault simulation training equipment of this embodiment may further include a power module, which is used to supply power to the drinking water tank boost control fault simulation circuit module and / or the central console 2.

[0053] As a preferred solution, it further comprises a storage device 4 , which is arranged on the stand body 1 .

[0054] For example, the storage device 4 in this embodiment may be provided with three drawer-type and three sliding door-type storage bins. The drawer-type storage bins can store documents and small tools; the sliding door-type storage bins can be used to store large equipment.

[0055] As a preferred solution, the air conditioning component overheat protection fault simulation circuit module 3 is detachably mounted on the stand body 1 by screws.

[0056] As a preferred solution, four universal wheels 5 are provided at the bottom of the platform body 1, and each of the universal wheels 5 is equipped with a locking mechanism.

[0057] In this embodiment, four universal wheels 5 are arranged at the bottom of the stand body 1 to facilitate movement of the fault simulation training device. Each universal wheel 5 is provided with a locking mechanism to ensure the stability of the fault simulation training device during training.

[0058] The fault simulation training equipment for the overheat protection circuit of the civil aviation air conditioning component provided by the embodiment of the utility model can simulate various circuit fault points in the overheat protection fault simulation circuit module 3 of the air conditioning component through the central control console 2, and can directly measure the circuit fault through the fault measurement hole on the circuit panel, without disassembling the circuit and restoring it, which helps to simplify the training operation and reduce the loss of line components.

[0059] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A fault simulation training device for overheat protection circuit of civil aviation air conditioning components, characterized in that: Including overheat protection fault simulation circuit modules for the test bench body, center console and air conditioning components; The central console and the air conditioning component overheat protection fault simulation circuit module are both arranged on the platform body, and the air conditioning component overheat protection fault simulation circuit module includes a dark box and a circuit panel, and the dark box is communicatively connected with the central console; The dark box includes an air-conditioning component overheat protection fault simulation circuit, and the air-conditioning component overheat protection fault simulation circuit includes a DC power supply, a thermal relay, a thermistor module, a reset switch module and an overheat indication module; the DC power supply is connected to one end of the thermistor module via the coil of the thermal relay, and the other end of the thermistor module is grounded, and the reset switch module and the overheat indication module are respectively connected to the first make contact and the second make contact of the thermal relay; the circuit panel is provided with a connection schematic diagram corresponding to the air-conditioning component overheat protection fault simulation circuit and a number of fault measurement holes.

2. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components according to claim 1, characterized in that: The DC power supply is connected to the first end of the coil of the thermal relay, the second end of the coil of the thermal relay is connected to the common contact of the first make contact and connected to one end of the thermal switch module; the normally open contact of the first make contact is connected to the first end of the reset switch module, and the second end of the reset switch module is grounded; the first end of the overheat indication module is used to connect to an external power supply, the second end of the overheat indication module is connected to the normally open contact of the second make contact, and the common contact of the second make contact is grounded; The circuit panel is provided with a reset button connected to the dark box, and the reset switch module is controlled by the reset button.

3. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 1, characterized in that: The thermistor switch module includes a turbine inlet overheat switch unit, a component outlet overheat switch unit and a compressor outlet overheat switch unit; the DC power supply is connected to the first end of the turbine inlet overheat switch unit, the first end of the component outlet overheat switch unit and the first end of the compressor outlet overheat switch unit through the coil of the thermal relay, and the second end of the turbine inlet overheat switch unit, the second end of the component outlet overheat switch unit and the second end of the compressor outlet overheat switch unit are all grounded.

4. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 2, characterized in that: A diode is also connected between the first normally closed contact and the reset switch module, the normally open contact of the first normally closed contact is connected to the anode of the diode, and the cathode of the diode is connected to the first end of the reset switch module.

5. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 2, characterized in that: A trip switch is also connected between the DC power supply and the first end of the coil of the thermal relay.

6. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 1, characterized in that: The overheat indication module is specifically an overheat indication lamp.

7. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 1, characterized in that: The central console includes a host computer with a display.

8. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 1, characterized in that: It also includes a storage device, which is arranged on the stand body.

9. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components as claimed in claim 1, characterized in that: The air conditioning component overheat protection fault simulation circuit module is detachably mounted on the stand body by screws.

10. The fault simulation training equipment for overheat protection circuit of civil aviation air conditioning components according to claim 1, characterized in that: The bottom of the platform body is provided with four universal wheels, and each of the universal wheels is equipped with a locking mechanism.

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