Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oil dipstick with high-reliability sealing structure

A technology of sealing structure and reliability, applied in the fuel tank of the power plant, the level indicator of the level member, the buoy liquid level indicator, etc., can solve the problems such as life and reliability limitation, corrosion and failure of the sealing O-ring , to achieve high reliability and sealing effect

Pending Publication Date: 2021-03-09
四川泛华航空仪表电器有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the seal of the magnetic float type fuel tank oil dipstick at the interface mostly only uses O-rings to ensure its sealing reliability, and this phenomenon determines that the life of the product is almost only dependent on the O-rings that play a sealing role. The O-ring is easy to age, corrode or fail due to other reasons, so it is necessary to release the fuel disassembly product to replace the O-ring
When the service life of modern general-purpose aircraft is greatly improved, the oil dipstick of the fuel tank will be required to have a higher service life and high reliability, and this requirement will be limited by the service life and reliability of the sealing O-ring

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oil dipstick with high-reliability sealing structure
  • Oil dipstick with high-reliability sealing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An oil dipstick with a high reliability sealing structure, combined with figure 1 with figure 2 As shown, it is installed in the fuel tank and passes through the lower wall plate 8 of the fuel tank, including the magnetic float assembly 2, the guide rod 3, the interface cavity 4, the base support 7, the upper first O-ring 9, and the scale rod assembly 13;

[0022] The base support 7 is fixedly connected with the lower wall plate 8 of the fuel tank by screws, and the first O-ring 9 on the upper part is located between the base support 7 and the lower wall plate 8 of the fuel tank;

[0023] The base support 7 is a hollow structure, and the hollow structure is divided into an interface cavity 4 located at the upper end of the hollow structure and a cylindrical lower cavity located at the lower end;

[0024] The guide rod 3 is installed in the fuel tank, the bottom port of the guide rod 3 is in the shape of a flared horn, and a rubber pad 6 is installed in the interface ...

Embodiment 2

[0028] On the basis of above-mentioned embodiment 1, in order to realize the present invention better, combine figure 1 with figure 2 As shown, further, it also includes a spring 10, a blocking sleeve 11, a second lower O-ring 12 and a rubber strip 5; Self-locking structure; the block cover 11 is arranged between the upper end of the cylindrical lower cavity and the scale rod assembly 13, the block cover 11 is an annular sleeve, and is located above the spring 10 in the cylindrical lower cavity The lower second O-ring 12 is located at the bottom of the interface cavity 4 ports and is fixedly connected to the upper end of the block sleeve 11, and the diameter of the central hole of the lower second O-ring 12 is the same as the diameter of the scale rod assembly 13 , the radius of the outer ring of the lower second O-ring 12 is the same as the radius of the bottom port of the interface cavity 4; the rubber strip 5 has a shielding layer and is located in the trumpet-shaped uppe...

Embodiment 3

[0032] On the basis of any one of the above-mentioned embodiments 1-2, in order to better realize the present invention, in combination figure 1 with figure 2 As shown, further, the rubber pad 6 is integrally installed with the bottom port of the guide rod 3, and is fixed in the interface cavity 4 through the interface thread, and thread glue is applied to the interface thread; the interface cavity 4 and Between the guide rods 3, a sealant solution capable of curing at room temperature is coated.

[0033] Working principle: The guide rod 3 and the interface cavity 4 can be fixed more tightly through the interface thread, thereby enhancing the reliability of the fuel tank, and the thread glue is applied on the interface thread to make the interface more tightly sealed.

[0034] Other parts of this embodiment are the same as those of any one of Embodiments 1-2 above, so details are not repeated here.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

According to the oil dipstick of the high-reliability sealing structure, a guide rod is fixed to the lower wall plate of the oil tank through the base support, a magnetic floater assembly is arrangedon the outer side of the guide rod, and a graduated scale assembly is inserted into the guide rod from the lower wall plate of the oil tank through the base support; reading of the scale rod is controlled by the magnets on the magnetic floater assembly and the scale rod assembly, in order to ensure the tightness of the oil tank where the scale rod assembly is inserted into the guide rod, a rubberpad, a rubber strip and an O-shaped ring are arranged according to different interfaces on the structure, and tightness and reliability of the device are improved by filling sealant liquid and smearing threaded glue liquid; and meanwhile, an end cap is arranged at the top of the guide rod to limit vertical floating of the magnetic floater assembly, and finally high reliability and leakproofness ofthe magnetic floater type fuel oil tank are achieved.

Description

technical field [0001] The invention belongs to the field of sealing of fuel oil tanks, and in particular relates to an oil dipstick with a high-reliability sealing structure. Background technique [0002] At present, the oil dipstick used by aircraft to assist in measuring the fuel quantity generally adopts a very mature magnetic float fuel tank dipstick, and the oil dipstick of this structure needs to consider the sealing reliability of the fuel tank interface because it needs to penetrate the fuel tank wall. At present, the seal of the magnetic float type fuel tank oil dipstick at the interface mostly only uses O-rings to ensure its sealing reliability, and this phenomenon determines that the life of the product is almost only dependent on the O-rings that play a sealing role. However, the O-ring is easily aged, corroded, or fails due to other reasons, so it is necessary to release the fuel disassembly product to replace the O-ring. When the service life of modern genera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01F23/04G01F23/30B64D37/06
CPCG01F23/04G01F23/30B64D37/06
Inventor 牛志宁邱遥远唐文龙
Owner 四川泛华航空仪表电器有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com