CN102128667B - Test device for oil volume calibration of large oil tank - Google Patents

Abstract

The invention belongs to the field of aviation testing and relates to a test device for calibrating the fuel volume of a large fuel tank. A fuel volume calibration test device for a large fuel tank, comprising a metering refueling part 1 and a metering and draining part 2; , the ground refueling pipeline 8, and the ground oil return pipeline 9; The invention can greatly improve work efficiency, and greatly save manpower, material resources and time required for testing. Using this device, only a few people can freely complete the fuel tank calibration test of large aircraft within one day, and the test data is accurate.

Description

A large fuel tank fuel volume calibration test device

technical field

The invention belongs to the field of aviation testing and relates to a test device for calibrating the fuel volume of a large fuel tank.

Background technique

Aircraft fuel tank calibration test is the most basic test of aircraft fuel system. In the past, the method used for the calibration of aircraft fuel tanks was to refuel and drain the fuel tanks by manpower equal weighing multiple times, and draw the H-V(M) curve according to the liquid level of the fuel tanks. For large fuel tanks with a fuel capacity of tens of tons, this method requires more than tens of manpower, continuous days without interruption, and a large amount of material resources to complete a calibration task, which is very cumbersome, time-consuming, and as many as several Hundreds of operations are also easy to introduce human errors and cumulative errors.

Contents of the invention

The purpose of the present invention is to provide a device capable of accurately and quickly calibrating large fuel tanks, which can accurately calibrate the oil volume of large fuel tanks, improve work efficiency, and save manpower, material resources and time required for testing.

Technical scheme of the present invention:

A fuel volume calibration test device for a large fuel tank, comprising a metering refueling part 1 and a metering and draining part 2; , the ground refueling pipeline 8, and the ground oil return pipeline 9; the measurement and control system 3 is respectively connected with the pressure control valve 4, the flow control valve 5, and the flow meter 6; The flow meter 6 and the fueling gun 7 are connected in series to the test fuel tank 10, the ground fueling pipe 8 is connected to the pressure control valve 4 in front of the flow control valve 5, and the other end of the pressure control valve 4 is connected to the ground oil return pipeline 9;

The metering oil discharge part 2 is composed of a first oil discharge valve 11, an oil discharge pipeline 12, a ground weighing oil tank 13, and a second oil discharge valve 14. One end of the first oil discharge valve 11 is connected to the test oil tank 10, and the other end is Connect the oil discharge pipeline 12 to the ground weighing oil tank 13 and hang above it, one end of the second oil drain valve 14 is connected to the oil discharge port of the ground weighing oil tank 13, and the other end is connected to the ground oil return pipeline 9;

The measurement and control system 3 is respectively connected with the pressure control valve 4 , the flow control valve 5 , the flow meter 6 , the first oil discharge valve 11 , and the weighing mechanism 16 .

Preferably, the first oil discharge valve 11 is an electric control valve, and the second oil discharge valve 14 is a turbine ball valve;

Preferably, the ground weighing fuel tank 13 is composed of a standard fuel tank 15 and a weighing mechanism 16, the standard fuel tank is located above the weighing mechanism, and the standard fuel tank includes a liquid level gauge 17 and a bottom drain outlet 18;

Preferably, the flowmeter 6 is a high-precision flowmeter.

The advantages of the present invention are: for large oil tanks with an oil carrying capacity of up to tens of tons, the present invention can greatly improve work efficiency and greatly save manpower, material resources and time required for testing. Using this device, only a few people can freely complete the fuel tank calibration test of a large aircraft within one day, and the test data is accurate.

Description of drawings:

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention, wherein:

1 metering refueling part, 2 metering oil discharge part, 3 measurement and control system, 4 pressure control valve, 5 flow control valve, 6 flow meter, 7 refueling gun, 8 ground refueling pipeline, 9 ground oil return pipeline, 10 test fuel tank, 11 The first oil discharge valve, 12 oil discharge pipeline, 13 ground weighing oil tank, 14 second oil discharge valve, 15 standard oil tank, 16 weighing mechanism, 17 liquid level gauge, 18 bottom drain outlet.

Detailed ways:

See Figure 1. A calibration test device for the fuel volume of a large fuel tank, comprising a metering refueling part 1 and a metering and draining part 2;

The metering and refueling part 1 is composed of a measurement and control system 3, a pressure control valve 4, a flow control valve 5, a flow meter 6, a refueling gun 7, a ground refueling pipeline 8, and a ground oil return pipeline 9; The control valve 4, the flow control valve 5, and the flow meter 6 are connected, and the 8 roads of the ground refueling pipe are successively connected to the test fuel tank 10 with the flow control valve 5, the flow meter 6 and the refueling gun 7. The pressure control valve 4 is connected to the front of the control valve 5, and the other end of the pressure control valve 4 is connected to the ground oil return pipeline 9;

The metering oil discharge part 2 is composed of a first oil discharge valve 11, an oil discharge pipeline 12, a ground weighing oil tank 13, and a second oil discharge valve 14. One end of the first oil discharge valve 11 is connected to the test oil tank 10, and the other end is Connect the oil discharge pipeline 12 to the ground weighing oil tank 13 and hang above it, one end of the second oil drain valve 14 is connected to the oil discharge port of the ground weighing oil tank 13, and the other end is connected to the ground oil return pipeline 9;

The measurement and control system 3 is respectively connected with the pressure control valve 4, the flow control valve 5, the flow meter 6, the first oil discharge valve 11, and the weighing mechanism 16;

Preferably, the first oil discharge valve 11 is an electric control valve, and the second oil discharge valve 14 is a turbine ball valve;

Preferably, the ground weighing fuel tank 13 is composed of a standard fuel tank 15 and a weighing mechanism 16, the standard fuel tank is located above the weighing mechanism, and the standard fuel tank includes a liquid level gauge 17 and a bottom drain outlet 18;

Preferably, the flowmeter 6 is a high-precision flowmeter.

When metering refueling: insert the refueling gun 7 into the test fuel tank 10, the measurement and control system 3 will preset the refueling parameters and collect the signal of the flow meter 6, and then control the pressure control valve 4 and the flow control valve 5 to realize automatic metering and refueling under various conditions;

When metering oil discharge: the measurement and control system 3 controls the first oil discharge valve 11 through preset oil discharge parameters and collects the signal of the weighing mechanism 16 to realize metered oil discharge in various states; when the oil volume in the ground weighing oil tank 13 exceeds 1 ton , open the second oil drain valve 14, the fuel oil in the ground weighing fuel tank 13 is discharged back to the oil depot through the ground oil return pipeline 9, and the aforementioned metering oil draining operation is continued.

Claims (4)

1. A test device for calibrating the fuel volume of a large fuel tank, characterized in that it includes a metering refueling part [1] and a metering oil discharge part [2]; The metering refueling part [1] consists of a measurement and control system [3], a pressure control valve [4], a flow control valve [5], a flow meter [6], a refueling gun [7], a ground refueling pipeline [8], a ground The oil return pipeline [9]; the measurement and control system [3] is respectively connected with the pressure control valve [4], the flow control valve [5], and the flow meter [6], and the ground refueling pipeline [8] is connected with the flow The control valve [5], flow meter [6] and refueling gun [7] are connected in series to the test oil tank [10], and the ground refueling pipe [8] is connected to the pressure control valve [4] before the flow control valve [5] , the other end of the pressure control valve [4] is connected to the ground oil return pipeline [9]; The metered oil discharge part [2] is composed of a first oil discharge valve [11], an oil discharge pipeline [12], a ground weighing oil tank [13], and a second oil discharge valve [14]. The first oil discharge One end of the valve [11] is connected to the test oil tank [10], the other end is connected to the oil discharge pipeline [12] to the ground weighing oil tank [13] and suspended above, and one end of the second oil drain valve [14] is connected to the ground weighing oil tank [ 13] Oil drain port, the other end is connected to the ground oil return pipeline [9]; The ground weighing fuel tank [13] is composed of a standard fuel tank [15] and a weighing mechanism [16], and the standard fuel tank [15] is located above the weighing mechanism [16]; The measurement and control system [3] is respectively connected with the pressure control valve [4], the flow control valve [5], the flow meter [6], the first oil discharge valve [11], and the weighing mechanism [16]. 2. The large fuel tank fuel volume calibration test device according to claim 1, characterized in that the first oil drain valve [11] is an electric control valve, and the second oil drain valve [14] is a turbine ball valve. 3. The large fuel tank fuel volume calibration test device according to claim 1, characterized in that, the standard fuel tank [15] includes a liquid level gauge [17] and a bottom drain port [18]. 4. The large fuel tank oil volume calibration test device according to claim 1 or 3, characterized in that the flow meter [6] is a high-precision flow meter.

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