Alarm type gravity refueling connector

Abstract

The utility model discloses an alarm type gravity refueling connector which comprises an outer shell, a refueling connecting pipe and a floater early warning assembly, and the outer shell is used for being erected on a refueling port and covering the refueling port. The oil injection connecting pipe is connected to the outer shell, penetrates through the outer shell from top to bottom and is used for being connected with an oil supply pipeline for oil injection. The floater early warning assembly comprises a cylinder, a floater switch and an alarm, the cylinder is detachably installed at the bottom of the outer shell, a channel communicated with the outside is formed in the cylinder and used for guiding oil into the channel, and the floater switch is installed on the inner side of the cylinder. According to the alarm type gravity oil filling connector, the gravity oil filling connector composed of the outer shell, the oil filling connecting pipe and the floater early warning assembly can be erected on a gravity oil filling port, the oil filling port is covered, impurities are prevented from entering the gravity oil filling port, an alarm is triggered through the floater switch and the alarm when the liquid level of fuel oil is too high, and workers are warned in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to gravity oil filling connector technical field, concretely relates to a warning type gravity oil filling connector. BACKGROUND

[0002] Gravity oil filling is a kind of oil filling mode of aircraft, is used in the process of aircraft fuel oil supply test.The existing gravity oil filling mode is connected with oil supply pipeline and oil truck or oil source, directly imports fuel from the gravity oil filling port of aircraft fuel tank, for example, China patent 202020564680.0 discloses an aviation oil supply oil filling machine, including oil filling tank, filter separator, flowmeter are installed in oil filling tank, filter separator and flowmeter are communicated, filter separator is communicated with inlet pipe, flowmeter is communicated with pressure oil filling pipe and gravity oil filling pipe.The existing fuel oil filling connector is divided into two kinds:the first kind is single-pipe type oil filling connector for self-use, is mostly used in self-production, simple structure is only a straight pipe and is equipped with clamp to fix pipeline.The second kind is the clamp gun type gravity oil filling connector used in fuel oil filling truck, which will automatically close when the oil is full, and the oil filling pipeline is closed.

[0003] For the above prior art, there are still the following problems: when the clamp gun type fuel oil filling connector abnormally jumps during oil filling, the oil pump is still working, the pressure in the pipeline is accumulated, and there is a hidden danger that may cause damage to the pipeline and oil filling accessories. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the above technical deficiencies, and proposes a warning type gravity oil filling connector to solve the technical problem of easy fuel overflow and safety hazards when using the gravity fuel oil filling mode in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a warning type gravity oil filling connector, which comprises:

[0007] The outer shell body is used to be supported on the oil filling port and cover the oil filling port.

[0008] The oil injection connecting pipe is connected to the outer shell body and penetrates the outer shell body from top to bottom, and is used to connect the oil supply pipeline for oil injection.

[0009] The float early warning assembly comprises a cylindrical barrel, a float switch and an alarm, the cylindrical barrel is detachably installed at the bottom of the outer shell body, a channel is arranged on the cylindrical barrel and connected with the outside, the oil liquid is introduced into the cylindrical barrel, the float switch is installed on the inner side of the cylindrical barrel, and the alarm is installed on the inner side of the outer shell body and electrically connected with the float switch.

[0010] In some embodiments, the outer shell comprises an upper shell and a lower shell, the upper shell is connected to the top of the lower shell, and the outer diameter of the upper shell is larger than that of the lower shell, the upper shell is used to cover the top of the oil filler, and the lower shell is used to be inserted into the gravity oil filler.

[0011] In some embodiments, the oil injection connecting pipe comprises a straight pipe and a bent pipe, the straight pipe is connected to the outer shell and penetrates the outer shell from top to bottom, and the bent pipe is detachably connected to the top end of the straight pipe.

[0012] In some embodiments, the upper shell comprises a bottom shell and an upper cover, the bottom shell is connected to the top of the lower shell, and the upper cover is sleeved on the outer side of the straight pipe and abuts against the top of the bottom shell.

[0013] In some embodiments, the bottom end of the bent pipe is provided with a filter cabin, a filter screen is inserted into the inner side of the filter cabin, and the filter screen abuts against the top end of the straight pipe.

[0014] In some embodiments, the top of the upper cover is provided with a sound hole, the alarm is mounted on the inner side of the bottom shell and located directly below the sound hole.

[0015] In some embodiments, the bottom of the cylindrical barrel is closed, and a flow guide hole is formed on the outer circumferential surface of the cylindrical barrel.

[0016] In some embodiments, the number of the flow guide holes is multiple, and the multiple flow guide holes are circumferentially distributed on the outer circumferential surface of the cylindrical barrel.

[0017] In some embodiments, the inner side of the filter cabin is provided with a sealing ring abutting against the outer side of the straight pipe.

[0018] In some embodiments, the inner side of the outer shell is further provided with a storage battery, and the alarm and the float switch are electrically connected to the storage battery.

[0019] Compared with the prior art, the alarm type gravity oil filler joint provided by the utility model can be erected on the gravity oil filler, covers the oil filler, avoids entering sundries, and triggers the alarm when the fuel liquid level is too high through the float switch and the alarm, timely warns the staff, and performs the operation of disconnecting the oiling. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is the three-dimensional drawing of the alarm type gravity oil filler joint provided by the utility model embodiment;

[0021] Fig. 2 is the three-dimensional explosion drawing of the alarm type gravity oil filler joint provided by the utility model embodiment.

[0022] Fig. 3 is the internal structure diagram of the alarm type gravity refueling connector provided by the embodiment of the utility model.

[0023] Mark explanation:

[0024] 1, the outer shell body; 11, the upper shell body; 111, the bottom shell; 112, the upper cover body; 113, the sound hole; 12, the lower shell body; 2, the oil filling connecting pipe; 21, the straight pipe; 22, the elbow pipe; 23, the filter cabin; 24, the filter screen; 25, the sealing ring; 3, the float early warning assembly; 31, the cylindrical barrel; 32, the float switch; 33, the alarm; 34, the flow guide hole; 35, the storage battery. Specific implementation

[0025] In order to make the utility model purposes, technical schemes and advantages more clearly, the following is combined with the drawings and examples, and the utility model is further described in detail.It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0026] In order to solve the technical problem that fuel overflow is easy to occur when using gravity fuel filling mode, and there is a safety hazard, the utility model provides an alarm type gravity refueling connector, which can realize oil liquid high liquid level early warning, avoid oil leakage and prevent loss.

[0027] It should be noted that the alarm type gravity refueling connector described in the utility model is used for but not limited to gravity refueling of the aircraft fuel tank, in order to facilitate the description, in the utility model, only the alarm type gravity refueling connector applied to the gravity refueling port of the aircraft fuel tank is taken as an example for description, and the principle of the alarm type gravity refueling connector applied to other gravity refueling is substantially the same as that applied to the gravity refueling of the aircraft fuel tank, which is not described here.

[0028] Please refer to Figs. 1-3 The utility model provides an alarm type gravity refueling connector, the alarm type gravity refueling connector includes an outer shell body 1, an oil filling connecting pipe 2 and a float early warning assembly 3;The oil filling connecting pipe 2 is connected on the outer shell body 1 and penetrates the outer shell body 1 from top to bottom, which is used for connecting oil supply pipeline oil filling;The float early warning assembly 3 includes a cylindrical barrel 31, a float switch 32 and an alarm 33, the cylindrical barrel 31 is detachably installed at the bottom of the outer shell body 1, and the cylindrical barrel 31 is provided with a passage in communication with the outside, which is used for guiding oil liquid into it, the float switch 32 is installed on the inner side of the cylindrical barrel 31, and the alarm 33 is installed on the inner side of the outer shell body 1 and is electrically connected with the float switch 32.

[0029] It can be understood that the alarm 33 adopts a sound-emitting alarm, such as a buzzer, which is triggered by the float switch 32 when fuel enters the cylinder 31, thereby starting the alarm 33 to emit an alarm sound, which can remind the staff to disconnect the fueling oil circuit to avoid oil tank leakage and prevent loss; the float height is set to be 10 cm below the maximum fueling liquid surface, leaving a longer reaction time.

[0030] Further, the inner side of the outer shell 1 is also provided with a storage battery 35, and the alarm 33 and the float switch 32 are electrically connected to the storage battery 35, which supplies power to the float switch 32 and the alarm 33.

[0031] In one embodiment, as shown in Fig. 1 , in order to avoid foreign objects from entering the fueling port and causing the oil tank to be contaminated, the outer shell 1 includes an upper shell 11 and a lower shell 12, the upper shell 11 is connected to the top of the lower shell 12, and the outer diameter of the upper shell 11 is greater than that of the lower shell 12, the upper shell 11 is used to cover the top of the fueling port, and the lower shell 12 is used to be inserted into the gravity fueling port, and the outer shell 1 is integrally processed in a stepped metal rod; the upper shell 11 is a first stepped section with a diameter of ten centimeters, the gravity fueling diameter is seven point five centimeters, the shell completely covers the port cover to avoid excess debris from entering, and the inner side of the upper shell 11 is hollow to accommodate the alarm 33; in addition, the diameter of the lower stepped surface is slightly smaller than that of the fueling port, and the periphery is made of smooth stainless steel material, which will not cause material shedding when in contact with the wall of the fueling port.

[0032] In one embodiment, as shown in Fig. 1 , Fig. 2 and Fig. 3 , in order to be connected to the fuel supply pipeline, the fueling connection pipe 2 includes a straight pipe 21 and an elbow pipe 22, the straight pipe 21 is connected to the outer shell 1 and penetrates the outer shell 1 from top to bottom, when the outer shell 1 is inserted into the fueling port, fuel is guided into the fueling port through the elbow pipe 22 and the straight pipe 21, and the elbow pipe 22 is detachably connected to the top end of the straight pipe 21 for easy disassembly and installation. The inner side of the elbow pipe 22 is in the form of internal threads, which is larger than the diameter of the straight pipe 21, and is screwed with the straight pipe 21 for easy installation and disassembly.

[0033] Further, in order to facilitate the installation of the alarm 33 and other components in the outer shell 1, the upper shell 11 includes a bottom shell 111 and an upper cover 112, the bottom shell 111 is connected to the top of the lower shell 12 and is integrally formed with the lower shell 12, and the upper cover 112 is sleeved on the outer side of the straight pipe 21 and abuts against the top of the bottom shell 111, the upper cover 112 can be detached upward after the elbow pipe 22 and the straight pipe 21 are disassembled, thereby facilitating the installation of the alarm 33 and other components in the bottom shell 111.

[0034] Further, the bottom end of the elbow pipe 22 is provided with a filter cabin 23, which is a cavity at the connection position of the elbow pipe 22 and the straight pipe 21, and the filter cabin 23 is internally inserted with a filter screen 24, which abuts against the top end of the straight pipe 21, and after the connection of the elbow pipe 22 and the straight pipe 21, the filter screen 24 is clamped, and when it needs to be replaced, the filter screen 24 can be taken out after the straight pipe 21 and the elbow pipe 22 are disassembled. The filter screen precision is 70-100 microns, which is consistent with the filter precision of the aircraft fuel pump and oil filter, and can be adjusted and strengthened to filter the fuel and save the oil loss of the flushing pipeline.

[0035] Further, the inner side of the filter cabin 23 is provided with a sealing ring 25 which abuts against the outer side of the straight pipe, so as to improve the sealing performance after the connection of the elbow pipe 22 and the straight pipe 21.

[0036] Further, in order to avoid the alarm sound reduction caused by sealing, the top of the upper cover body 112 is provided with a sound hole 113, and the alarm 33 is installed on the inner side of the bottom shell 111 and located directly below the sound hole 113, so as to transmit the alarm sound.

[0037] In one embodiment, please refer to Fig. 3 In order to avoid the foreign matter caused by the float falling off due to long-time use, the bottom of the cylindrical barrel 31 is closed, and the flow guide holes 34 are formed on the outer peripheral surface of the cylindrical barrel 31, the bottom of the cylindrical barrel 31 is closed to avoid the float of the float switch 32 from falling off, and the fuel enters the cylindrical barrel 31 through the flow guide holes 34, which can be detected by the float switch 32 to prewarn the liquid level.

[0038] Further, the number of the flow guide holes 34 is multiple, and the multiple flow guide holes 34 are circumferentially distributed on the outer peripheral surface of the cylindrical barrel 31, so that the fuel can enter the cylindrical barrel 31 uniformly.

[0039] In order to better understand the present application, the following will be described in detail Figs. 1 to 3 The technical scheme of the present application is described in detail as follows: first, the oil injection connecting pipe 2 is connected with the oil supply pipeline, and then the shell body 1 is inserted into the gravity oil filling port, and the upper shell body 11 covers the top of the oil filling port, and the lower shell body 12 is inserted into the gravity oil filling port to avoid the entry of excessive impurities; during the oil injection process, the oil liquid is filtered by the filter screen 24, thereby saving the oil loss of the flushing pipeline; if the liquid level of the oil liquid is too high, the oil liquid enters the cylindrical barrel 31 through the flow guide holes 34, triggers the float switch 32, and starts the alarm 33 to prewarn the staff and warn them to disconnect the oil filling operation.

[0040] The specific implementation of the utility model above does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An alarm gravity fuel filler, characterized by, The utility model relates to a fuel tank filler cap, which comprises: an outer shell for being mounted on a fuel tank filler cap and covering the fuel tank filler cap; an oil injection connecting pipe connected to the outer shell and penetrating the outer shell from top to bottom for connecting an oil injection pipeline; and a float early warning assembly comprising a cylindrical barrel, a float switch and an alarm, the cylindrical barrel being detachably mounted at the bottom of the outer shell and provided with a channel for introducing oil into the cylindrical barrel, the float switch being mounted inside the cylindrical barrel, and the alarm being mounted inside the outer shell and electrically connected to the float switch. The outer shell comprises an upper shell and a lower shell, the upper shell being connected to the top of the lower shell and having an outer diameter larger than that of the lower shell, the upper shell being used for covering the top of the fuel tank filler cap, and the lower shell being used for being inserted into the fuel tank filler cap.

2. The warning gravity fuel filler as defined in claim 1, wherein, The oil injection connecting pipe comprises a straight pipe and a bent pipe, the straight pipe being connected to the outer shell and penetrating the outer shell from top to bottom, and the bent pipe being detachably connected to the top end of the straight pipe.

3. The warning gravity fuel filler as defined in claim 2, wherein, The upper shell comprises a bottom shell and an upper cover, the bottom shell being connected to the top of the lower shell, and the upper cover being sleeved on the outer side of the straight pipe and abutting against the top of the bottom shell.

4. The warning gravity fuel filler as defined in claim 3, wherein, The bottom end of the bent pipe is provided with a filter cabin, the filter cabin being inserted with a filter screen on the inner side thereof, and the filter screen abutting against the top end of the straight pipe.

5. The warning gravity fuel filler as defined in claim 4, wherein, The top of the upper cover is provided with a sound hole, and the alarm is mounted on the inner side of the bottom shell and located directly below the sound hole.

6. The warning gravity fuel filler as defined in claim 5, wherein, The bottom of the cylindrical barrel is closed, and the cylindrical barrel is provided with a plurality of flow guide holes on the outer circumferential surface thereof.

7. The warning gravity fuel filler as defined in claim 6, wherein, The plurality of flow guide holes are circumferentially distributed on the outer circumferential surface of the cylindrical barrel.

8. The warning gravity fuel filler as defined in claim 7, wherein, The filter cabin is provided with a sealing ring on the inner side thereof and abutting against the outer side of the straight pipe.

9. The warning gravity fuel filler as defined in claim 8, wherein, The inner side of the outer shell is further provided with a storage battery, and the alarm and the float switch are electrically connected to the storage battery.

10. The warning gravity fuel filler as defined in claim 9, wherein, ​

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