CN111796006A - A laminated fuel quantity detection sensor for aviation turbine - Google Patents

Abstract

The invention belongs to sensor technology, in particular to a laminated oil quantity detection sensor for aviation turbines. A. The pads and the plate B are stacked in turn. All the plates A and B are connected by wires respectively, forming a capacitor with the pads, and the pads are in contact with the absorbent cotton through the surrounding edges. When in use, the present invention is placed in cotton, and the pad contacts the absorbent cotton and absorbs the lubricating oil in the absorbent cotton until it reaches equilibrium. As the content of the lubricating oil in the absorbent cotton changes (increases or decreases), the lubricating oil content of the pad changes synchronously, The dielectric constant of the pad changes, and the capacitance value of the capacitor composed of the flat plate A, the flat plate B and the pad changes, and the purpose of detecting the oil content in the absorbent cotton is achieved by detecting the change of the capacitance value. The detected value is transmitted to the measurement and display module through the wire. It can realize on-line detection of oil content.

Description

A laminated fuel quantity detection sensor for aviation turbine

technical field

The invention belongs to sensor technology, and relates to on-line detection of oil content of absorbent cotton in an aviation turbine oil chamber. Specifically, it is a laminated oil quantity detection sensor for aviation turbine.

Background technique

At present, the oil-lubricated aviation turbine is used, and the lubricating oil is stored in the absorbent cotton in the special oil chamber. There is no device for online detection of the lubricating oil content. The oil consumption and refueling cycle can only be obtained by recording the use time. In the same working hours, the consumption of lubricating oil varies greatly, which makes it difficult to evaluate the amount of oil. Too much oil will cause oil leakage and pollute the environment. Too little oil will cause the bearing to be damaged due to poor lubrication. It is necessary to arrange lubricating oil in the turbine. Content sensor for easy online monitoring.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a laminated oil quantity detection sensor for aviation turbine, which is integrated in the turbine and can realize on-line monitoring of oil content.

The technical scheme of the present invention is:

A laminated oil quantity detection sensor for an aviation turbine, which is composed of a flat plate A (1), a flat plate B (2), a gasket (3), and a wire. Several flat plates A (1) are connected by the same wire, and several flat plates Plate B (2) is connected by another wire, and there is no short circuit between plates A (1) and B (2); several spacers (3) are installed on plate A (1) and plate B (2) ), the plate A (1), the gasket (3) and the plate B (2) are stacked in sequence, and the plate A (1), the gasket (3) and the gasket (3) form a capacitor.

The material of the flat plate A (1) and the flat plate B (2) is stainless steel.

The length and width specifications of plate A (1) and plate B (2) are determined according to the size of the measured oil chamber.

The thickness of flat plate A (1) and flat plate B (2) is 2-5mm.

The material of the pad (3) is wool felt.

The thickness of the liner (3) should ensure sufficient contact with the absorbent cotton.

The length and width of the pad (3) are consistent with the length and width of the flat plate A (1) and the flat plate B (2).

Several flat plates A (1), flat plates B (2), and spacers (3) ensure that there is a spacer (3) between each flat plate A (1) and flat plate B (2).

The advantage of the present invention is that the present invention is arranged in the absorbent cotton in the turbine oil chamber, so that the on-line detection of the oil content can be realized.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic diagram of the sensor application.

Detailed ways

The present invention will be described in further detail below. Referring to Figures 1 and 2, a sensor for detecting oil level in absorbent cotton for turbines, a laminated oil level detection sensor for aviation turbines, is composed of a flat plate A (1), a flat plate B (2), a gasket (3), and a wire. One flat plate A (1) is connected by the same wire, and several flat plates B (2) are connected by another wire, and there can be no short circuit between flat plates A (1) and B (2); (3) Installed between plate A (1) and plate B (2), plate A (1), pad (3) and plate B (2) are stacked in sequence, plate A (1), pad (3) ) and pad (3) form a capacitor.

The material of the flat plate A (1) and the flat plate B (2) is stainless steel.

The length and width specifications of plate A (1) and plate B (2) are determined according to the size of the measured oil chamber.

The thickness of flat plate A (1) and flat plate B (2) is 2-5mm.

The material of the pad (3) is wool felt. The wool felt is generally made of pure wool, and can also be made of cow hair or fiber by using processing adhesives. Material, used in industrial machinery anti-vibration, oil-containing lubrication, friction resistance, etc. Adhesive energy consumption, not easy to loosen, can be punched into parts of various shapes. The organization is tight and the gap is small, which can be used as a good filter material. Due to the compact density and stable performance of wool felt, various felt parts can be produced by punching.

Felt has good moisture retention and can be used as an adsorption prop. The amount of water and oil path absorbed by the felt can be used as the experimental judgment standard. It has good stability and is essential for experimental measurement data.

Wool felt T132 type wool felt is ordinary felt, and the fineness is not obvious. The density is 0.1g-0.6g/cm ³ , and the thickness of wool is below 56 (27.1-29um);

Mineral content is less than 0.04%;

Plant content is less than 0.05%;

The tensile strength is greater than 110kg (horizontal and vertical);

The T132 wool felt can also meet the operational requirements of the present invention.

The thickness of the liner (3) should ensure sufficient contact with the absorbent cotton. The thickness of the gasket (3) is generally 1 mm.

If there is a short circuit between plate A (1) and plate B (2), it will directly affect the accuracy of the detection data.

The length and width of the pad (3) are consistent with the length and width of the flat plate A (1) and the flat plate B (2).

Several plates A (1), B (2), and pads (3), to ensure that there is a pad (3) between each plate A (1) and plate B (2),

The gasket (3) is in contact with the absorbent cotton through the surrounding edges, and absorbs the lubricating oil in the absorbent cotton until the balance is reached. The lubricating oil content of the gasket (3) changes synchronously, and the dielectric constant of the gasket (3) changes. ), the capacitance value of the capacitor composed of the flat plate B (2) and the pad (3) changes, and the change of the capacitance value is detected to achieve the purpose of detecting the oil content in the absorbent cotton. The detection signal is transmitted to the measurement and display module through the wire [4].

Use process

The present invention is placed in cotton, and the liner (3) contacts the absorbent cotton and absorbs the lubricating oil in the absorbent cotton until it reaches equilibrium. Synchronous changes, the dielectric constant of the pad (3) changes, and the capacitance value of the capacitor composed of the plate A (1), the plate B (2) and the pad (3) changes. Quantitative testing purposes. The detection signal is transmitted to the measurement and display module through the wire [4].

Claims (9)

1. The utility model provides an aviation is lamination formula oil mass detection sensor for turbine which characterized in that: the device is composed of flat plates A (1), flat plates B (2), a gasket (3) and wires, wherein the flat plates A (1) are connected by the same wire, the flat plates B (2) are connected by the other wire, and short circuit cannot occur between the flat plates A (1) and the flat plates B (2); a plurality of gaskets (3) are arranged between the flat plate A (1) and the flat plate B (2), the flat plate A (1), the gaskets (3) and the flat plate B (2) are sequentially stacked, and the flat plate A (1), the gaskets (3) and the gaskets (3) form a capacitor.

2. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the flat plate A (1) and the flat plate B (2) are made of metal materials.

3. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the length and width specifications of the flat plate A (1) and the flat plate B (2) are determined according to the size of the measured oil chamber.

4. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the thickness of the flat plate A (1) and the flat plate B (2) is 2-5 mm.

5. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the material of the pad (3) is wool felt.

6. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the thickness of the pad (3) is such that it is in sufficient contact with the cotton wool.

7. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the length and width of the pad (3) are consistent with those of the flat plate A (1) and the flat plate B (2).

8. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the flat plates A (1), the flat plates B (2) and the gaskets (3) ensure that one gasket (3) is arranged between each flat plate A (1) and each flat plate B (2).

9. The laminated oil quantity detection sensor for an aviation turbine according to claim 1, wherein: the pad (3) is contacted with the absorbent cotton through the peripheral edge and absorbs the lubricating oil in the absorbent cotton until balance is achieved, the lubricating oil content of the pad (3) is changed synchronously, the dielectric constant of the pad (3) is changed, the capacitance value of a capacitor formed by the flat plate A (1), the flat plate B (2) and the pad (3) is changed, the change of the capacitance value is detected, the purpose of detecting the oil content in the absorbent cotton is achieved, and a detection signal is transmitted to the measuring and displaying module through a lead.

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