A differential pressure and moisture alarm device for an aviation fuel filter separator

Abstract

A differential pressure and moisture alarm device for an aviation fuel filter separator, belonging to the technical field of aviation fuel tank equipment, includes a differential pressure transmitter, a moisture sensor, an alarm, and an electrical control box. The differential pressure transmitter and moisture sensor are installed at the filter separator of the fuel tank, and are all connected to the electrical control box via corresponding circuits. The inlet of the differential pressure transmitter is connected to the inlet of the fuel tank filter separator, and its outlet is connected to the outlet of the filter separator. The moisture sensor is located at the bottom of the filter separator. This invention improves the intelligence level of aviation fuel storage tanks, enhances the operational safety and service life of aviation fuel systems, and reduces the probability of aircraft damage or accidents.

Description

Technical Field

[0001] This utility model belongs to the technical field of aviation fuel tank equipment, and in particular relates to an automatic alarm device for differential pressure and moisture level in aviation fuel filter separators. Background Technology

[0002] During the production, transportation, storage, and delivery of aviation fuel, due to the hydrophilic nature of the fuel oil, trace amounts of water dissolve in the fuel oil or exist in a free state within the aviation fuel. The presence of water in aviation fuel poses a significant threat to the safe flight of aircraft.

[0003] As aviation fuel ascends to high altitudes with the aircraft, some dissolved water precipitates out as the temperature decreases, becoming free water. This free water can pose several hazards to flight. For example, at low temperatures, it can condense into ice particles, which can easily clog the fuel system. Secondly, the deposition of free water accelerates fuel tank corrosion, shortening its service life. Furthermore, in the presence of water, the electrostatic charge generated by flowing hydrocarbon fuel is amplified many times over, and if this static electricity sparks, the consequences could be disastrous. These potential fuel system blockages, accelerated fuel tank corrosion, and the generation of electrostatic sparks all pose safety hazards to aircraft flight, thereby affecting the aircraft's normal service life and increasing flight costs. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent automatic alarm device for differential pressure and moisture level in an aviation fuel storage tank filter separator, in order to solve the technical problem that free water precipitates in existing aviation fuel as its temperature decreases, which may bring various dangers to aircraft flight.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A differential pressure and moisture alarm device for an aviation fuel filter separator includes a differential pressure transmitter, a moisture sensor, an alarm, and an electrical control box. The differential pressure transmitter and the moisture sensor are installed at the filter separator in the fuel tank, and the differential pressure transmitter, the moisture sensor, and the alarm are all associated with the electrical control box through corresponding circuits. The inlet of the differential pressure transmitter is connected to the inlet of the fuel tank filter separator, and its outlet is connected to the outlet of the filter separator. The moisture sensor is located at the bottom of the filter separator.

[0007] Furthermore, the electrical control box includes a housing, inside which are interconnected power supplies, PLCs, data gateways, and relays. The electrical control box is associated with a differential pressure transmitter and a moisture sensor through the data gateway, and with an alarm through the PLC. The side wall of the housing is equipped with a control panel associated with the power supply, PLC, data gateway, and relays.

[0008] Furthermore, the alarm uses a combination of sound and light to create an audible and visual alarm.

[0009] Furthermore, the bottom of the inner cavity of the filter separator is provided with a fixed mounting base, and the mounting base has multiple mounting holes of different heights from bottom to top. The moisture sensor can be detachably mounted on the mounting base through the mounting holes.

[0010] This utility model of an aviation fuel filter separator differential pressure and moisture alarm device improves the intelligence level of aviation fuel storage tanks, reduces the impact of free water precipitated in the storage tanks on the fuel operation system and fuel tank, improves the operational safety factor and service life of aviation fuel systems, and reduces the probability of aircraft damage or danger. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structural process of this utility model;

[0012] Figure 2 This is a schematic diagram of the mounting base of this utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of the electrical control box of this utility model;

[0014] The markings in the diagram are as follows: 1. Differential pressure transmitter; 2. Moisture sensor; 3. Alarm; 4. Electrical control box; 41. Box body; 42. Power supply; 43. PLC; 44. Data gateway; 45. Relay; 5. Mounting base; 6. Drain valve; 7. Filter separator. Detailed Implementation

[0015] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a differential pressure and moisture alarm device for an aviation fuel filter separator.

[0016] like Figure 1-3 As shown, the differential pressure and moisture alarm device for the aviation fuel filter separator of this utility model includes a differential pressure transmitter 1, a moisture sensor 2, an alarm 3, and an electrical control box 4. The differential pressure transmitter 1 is located at the filter separator 7 of the oil tank, with its inlet connected to the inlet of the filter separator 7 and its outlet connected to the outlet of the filter separator 7. The moisture sensor 2 is located at the bottom of the filter separator 7. The differential pressure transmitter 1, the moisture sensor 2, and the alarm 3 are all associated with the electrical control box 4 through corresponding circuits. During operation, the differential pressure transmitter 1 monitors the pressure difference between the inlet and outlet of the filter separator 7 in real time, and the moisture sensor 2 monitors the moisture data at the bottom of the filter separator 7 in real time. Both transmit the monitored data to the electrical control box 4, which collects and processes the transmitted data and sends a corresponding alarm signal to the alarm 3.

[0017] The electrical control box 4 includes a housing 41, which houses an interconnected power supply 42, a PLC 43, a data gateway 44, and a relay 45. The power supply 42 provides power to the various components of the alarm device. The electrical control box 4 is connected to the differential pressure transmitter 1 and the moisture sensor 2 via the data gateway 44, and to the alarm 3 via the PLC 43. A control panel connected to the various components within the housing 41 is located on the side wall of the housing 41. In this embodiment, a touch screen with real-time display, trend analysis, alarm setting, and data storage functions is used as the control panel. The data gateway 44 collects the differential pressure and bottom moisture data of the filter separator 7 through the differential pressure sensor and the moisture sensor 2, and transmits the collected data to the PLC 43. The PLC 43 processes and controls the data, and transmits the corresponding alarm signal to the alarm 3 according to the preset alarm threshold. During this process, the control panel displays the measurement data processed by the PLC 43 in real time, and provides functions such as alarm setting, alarm recording, and data curves.

[0018] Alarm 3 uses a combination of sound and light to create an audible and visual alarm, making its warning function more prominent and easier for staff to detect warning signals.

[0019] The bottom of the filter separator 7 is provided with a mounting base 5, the bottom end of which is fixed to the bottom surface of the inner cavity of the filter separator 7. The mounting base 5 has multiple mounting holes at different heights from its bottom from bottom to top. In this embodiment, the mounting holes are threaded holes. The moisture sensor 2 is provided with a corresponding screw. The moisture sensor 2 can be detachably mounted on the mounting base 5 through the threaded engagement of the screw and the mounting hole. In use, the moisture sensor 2 can be installed in the mounting hole at a predetermined height as needed, thereby realizing alarm operation at different heights. The bottom surface of the filter separator 7 is provided with a drain valve 6 associated with the electrical control box 4. When the moisture in the filter separator 7 exceeds the preset threshold of the moisture sensor 2, the electrical control box 4 controls the drain valve 6 to open according to the alarm signal issued by the moisture sensor 2, so as to discharge the excess moisture.

[0020] During operation, the differential pressure and bottom moisture data thresholds of the filter separator 7 inside PLC43 are first preset through the control panel. After the preset is completed, the overall alarm device can be activated. After the device is activated, the differential pressure transmitter 1 monitors and alarms the filter element differential pressure based on the differential pressure on both sides of the filter separator 7. The moisture sensor 2 monitors the moisture content and moisture level at the bottom of the filter separator 7 in real time. In this embodiment, the differential pressure transmitter 1 and the moisture sensor 2 adopt the 4-20mA or Modbus RTU protocol. The two transmit the collected data to the PLC43 in the electrical control box 4 through the data gateway 44. The PLC43 processes the collected data. If it exceeds the preset threshold, the PLC43 will send an alarm signal to the alarm 3. The alarm 3 starts working based on the alarm signal from the PLC43 and emits both sound and light alarms to remind the on-site personnel to handle the situation. During this process, the control panel monitors, controls, displays, and stores the data acquisition and processing process of the PLC43 in real time so that the personnel can have a more comprehensive understanding of the overall operation of the equipment.

[0021] This utility model's aviation fuel filter separator differential pressure and moisture alarm device improves the intelligence level of aviation fuel storage tanks through the cooperation of multiple components. The alarm 3, in conjunction with the differential pressure transmitter, moisture sensor 2, and electrical control box 4, can provide threshold alarms for the differential pressure of the filter separator 7 and the moisture content in the fuel oil in the storage tank. This allows on-site management personnel to intervene and handle the situation in a timely manner, thereby reducing the impact of free water precipitated from aviation fuel oil in the storage tank on the fuel operation system and fuel tank, reducing the possibility of electrostatic sparks generated by flowing hydrocarbon fuel in the storage tank, improving the operational safety factor and service life of each fuel system component, reducing the possibility of aircraft accidents, and lowering flight costs.

[0022] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A differential pressure and moisture alarm device for an aviation fuel filter separator, characterized in that, It includes a differential pressure transmitter (1), a moisture sensor (2), an alarm (3), and an electrical control box (4). The differential pressure transmitter (1) and the moisture sensor (2) are installed at the filter separator (7) of the oil tank. The differential pressure transmitter (1), the moisture sensor (2), and the alarm (3) are all associated with the electrical control box (4) through corresponding circuits. The inlet of the differential pressure transmitter (1) is connected to the inlet of the oil tank filter separator (7), and its outlet is connected to the outlet of the filter separator (7). The moisture sensor (2) is located at the bottom of the filter separator (7).

2. The differential pressure and moisture alarm device for aviation fuel filter separator according to claim 1, characterized in that, The electrical control box (4) includes a box body (41), inside which are installed interconnected power supply (42), PLC (43), data gateway (44) and relay (45). The electrical control box (4) is associated with differential pressure transmitter (1) and moisture sensor (2) through data gateway (44), and with alarm (3) through PLC (43). The side wall of the box body (41) is provided with a control panel associated with power supply (42), PLC (43), data gateway (44) and relay (45).

3. The differential pressure and moisture alarm device for the aviation fuel filter separator according to claim 1, characterized in that, The alarm (3) uses a combination of sound and light to create an audible and visual alarm (3).

4. The differential pressure and moisture alarm device for aviation fuel filter separator according to claim 1, characterized in that, The filter separator (7) has a fixed mounting base (5) at the bottom of its inner cavity. The mounting base (5) has multiple mounting holes of different heights from bottom to top. The moisture sensor (2) can be detachably mounted on the mounting base (5) through the mounting holes. The bottom of the filter separator (7) is provided with a drain valve (6) associated with the electrical control box (4).

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