CN101832389B - Fiber reinforced composite pressure bottle - Google Patents

Abstract

Translated fromChinese

本发明涉及一种用于盛装气体或液体的纤维增强复合材料压力瓶。本发明包括高分子材料内胆、绕置在高分子材料内胆外的复合材料层以及金属法兰接头，其特征在于金属法兰接头内设置有台阶，在台阶的下端设置有带有密封圈的凹槽，在金属法兰接头内侧高分子材料内胆内套装有套管，套管上端设置有卡装在台阶上的凸台，本发明在高分子材料内胆外表面，金属法兰接头内表面之间的施加的密封圈将它们之间的界面有效密封，并且内压越大，密封效果越好。

The invention relates to a fiber-reinforced composite material pressure bottle for containing gas or liquid. The invention includes a polymer material liner, a composite material layer wound outside the polymer material liner and a metal flange joint, and is characterized in that a step is arranged in the metal flange joint, and a sealing ring is provided at the lower end of the step The groove of the metal flange joint is set with a sleeve in the polymer material liner inside the metal flange joint, and the upper end of the sleeve tube is provided with a boss that is clamped on the step. The applied seal ring between the inner surfaces effectively seals the interface between them, and the greater the internal pressure, the better the sealing effect.

Description

Fiber reinforced composite pressure bottle

Technical field

The present invention relates to a kind of pressure bottle that is used for splendid attire gas or liquid.

Background technique

In the pressure bottle that composite material makes, replace the metallic material inner bag with the macromolecular material inner bag, reduced the weight of inner bag and bottle, improved the endurance life of bottle.About the composite pressure bottle of macromolecular material inner bag, following patent is arranged at home: (1) 03210592.4 " light composite material pressurized container "; (2) 00137586.5 " pressure container with wound composite fiber material and rubber liner "; (3) 01807147.3 " fiber reinforcement pressurized container and production methodes thereof "; (4) 97103911.9 " full compound material gas cylinder for vehicle use compressed natural gas and production methodes thereof ".In these patents, have only 97103911.9 how to propose method that macromolecular material inner bag and metal flange joint are linked together: inner bag in the rotational moulding process directly rotational moulding on the metal flange surface; Perhaps both are through being threaded.These two kinds of methods fundamentally do not solve between inner bag and the metal flange interface to effective sealing of gas or liquid.At low temperatures, macromolecular material all has bigger contraction than metal radial and axial like plastics, and this contraction can increase the distance between inner bag and the flange, opens the interface between them, the leakage of dress gas or liquid in causing; Even without this contraction, during splendid attire micro-molecular gas in pressure bottle (like hydrogen, rock gas); Gas molecule is very little, if do not have fine and close chemical bond, perhaps mechanical seal device between inner bag and the flange; Such as sealing rubber ring, micro-molecular gas still can run off from the interface.

Summary of the invention

Problem to be solved by this invention provides a kind of interface of can effectively improving between macromolecular material inner bag and the metal flange joint to the fiber reinforced composite pressure bottle of gas or liquid seal effect.

The present invention adopts following technological scheme:

The present invention includes macromolecular material inner bag, composite layer outside the macromolecular material inner bag and metal flange joint around the home; It is characterized in that being provided with step in the metal flange joint; Be provided with the groove that has seal ring in the lower end of step; In the inboard macromolecular material inner bag of metal flange joint, be set with sleeve pipe, the sleeve pipe upper end is provided with the boss that is installed on the step.

Sleeve outer wall of the present invention is provided with the sawtooth that embeds on the macromolecular material wall of inner container.

Beneficial effect of the present invention is following:

The present invention has realized the effective connection between macromolecular material inner bag and the metal flange joint.The present invention is at macromolecular material inner bag outer surface, and the seal ring that applies between the metal flange joint internal surface effectively seals the interface between them, and interior pressure is big more, and sealing effect is good more.The sleeve pipe that the present invention applies at macromolecular material inner bag internal surface; Stop effectively at low pressure and high molecular material under low temperature inner bag with respect to the metal flange joint in radial and axial contraction in the machinery combination of sawtooth on the embedded macromolecular material inner bag that is provided with on the sleeve pipe and the step that on metal flange joint internal diameter, is provided with.

Description of drawings

Accompanyingdrawing 1 is a structural representation of the present invention;

Accompanyingdrawing 2 is the C portion enlarged view of accompanyingdrawing 1;

Accompanyingdrawing 3 is the structural representation of metal flange joint of the present invention.

In the accompanying drawings: 1 metal flange joint, 2 grooves, 3 steps, 4 seal rings, 5 macromolecular material inner bags, 6 sleeve pipes, 7 sawtooth, 8 composite layers, 9 boss.

Embodiment

Be depicted as one embodiment of the present of invention like accompanyingdrawing 1,2,3, fiber reinforced composite pressure bottle of the present invention is used for gas or the liquid under the splendid attire certain pressure.Fiber reinforced composite pressure bottle of the present invention comprises macromolecular materialinner bag 5, composite layer outside macromolecular material inner bag 58 andmetal flange joint 1 around the home; It is characterized in that being provided with in themetal flange joint 1step 3; Be provided with thegroove 2 ofseal ring 4 in the lower end ofstep 3; Inmetal flange joint 1 inboard macromolecular materialinner bag 5, be set withsleeve pipe 6;Sleeve pipe 6 outer walls upper end is provided with theboss 9 that is installed on thestep 3, andsleeve pipe 6 is provided with thesawtooth 7 that embeds on macromolecular materialinner bag 5 walls.

Pressure bottle of the present invention can have twometal flange joints 1, also can adopt a metal flange joint, and the structural type of half complete closed in addition.

There is being astep 3 inboard ofmetal flange joint 1 of the present invention with place that macromolecular materialinner bag 5 begins to contact, on the inboard ofmetal flange joint 1 and the surface that macromolecular materialinner bag 5 contacts agroove 2 is arranged, and is used to placeseal ring 4.

The sealing at interface is realized byseal ring 4 betweenmetal flange joint 1 internal surface of the present invention and macromolecular materialinner bag 5 outer surfaces.Like this, pressure is big more, and macromolecular materialinner bag 5 is just drawn close to the internal surface ofmetal flange joint 1 more, and interfacial seal is also just good more.

The present invention is set withsleeve pipe 6 inmetal flange joint 1 inboard macromolecular materialinner bag 5,sleeve pipe 6 is provided withboss 9, andboss 9 can be sitting in above the step 3.Sleeve pipe 6 pushes macromolecular materialinner bag 5 tometal flange joint 1 direction; Increase the validity of interfacial seal betweenmetal flange joint 1 and the macromolecular materialinner bag 5; And prevent that under low pressure and low temperature, macromolecular materialinner bag 5 is with respect to the radial contraction ofmetal flange joint 1.

Shown in accompanyingdrawing 2, the outer wall ofsleeve pipe 6 is provided withsawtooth 7, andsawtooth 7 interlocks are embedded in the macromolecular material inner bag 5.The mechanical cooperative action ofsawtooth 7,sleeve pipe 6 andstep 3 can effectively prevent in low pressure and high molecular material under low temperatureinner bag 5 axial shrinkage with respect tometal flange joint 1.

If there is notsawtooth 7, coating adhesive on the outer surface ofsleeve pipe 6,sleeve pipe 6 and macromolecular materialinner bag 5 sticked together can prevent that also under low pressure and low temperature, macromolecular materialinner bag 5 is with respect to the axial shrinkage ofmetal flange joint 1.

The material that the material ofsleeve pipe 6 of the present invention andmetal flange joint 1 are used or the same, perhaps the thermal expansion coefficient between them differs very little.They can effectively push inner bag to keep effective sealing at interface between macromolecular materialinner bag 5 and themetal flange joint 1 with temperature expansion or contraction phase degree together like this.

The length ofsleeve pipe 6 vertical directions of the present invention wants to extend to the below of seal ring; The external diameter ofsleeve pipe 6 is slightly larger than the internal diameter of macromolecular materialinner bag 5 openings at normal temperatures, guarantees the effective extruding to macromolecular material inner bag 5.Boss 9 holdings on thesleeve pipe 6 are onstep 3;Sleeve pipe 6 is stoped bystep 3 with respect to the motion ofmetal flange joint 1 downwards like this; Because macromolecular materialinner bag 5 is fixed on thesleeve pipe 6 bysawtooth 7 or Bond, also be prevented from low pressure and high molecular material under low temperatureinner bag 5 axial shrinkage with respect tometal flange joint 1.

Claims (1)

1. fiber reinforced composite pressure bottle; It comprises macromolecular material inner bag (5), composite layer (8) outside macromolecular material inner bag (5) and metal flange joint (1) around the home; Be provided with step (3) in the said metal flange joint (1); Be set with sleeve pipe (6) in the inboard macromolecular material inner bag of said metal flange joint (1) (5); Said sleeve pipe (6) upper end is provided with the boss (9) that is installed on the said step (3), it is characterized in that step (3) lower end of said metal flange joint (1) is provided with the groove (2) that has seal ring (4), and said sleeve pipe (6) outer wall is provided with the sawtooth (7) that embeds on macromolecular material inner bag (5) wall.

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