초록 ▼

A tube coupling system (1) for a pressurised fluid system comprising a coupling body (3) for receiving a tube (5) of a pressurized fluid system, a leakage seal (7) for preventing fluid supplied from the pressurized fluid system via the tube to enter the coupling body (3), a gripping member (9) for g

A tube coupling system (1) for a pressurised fluid system comprising a coupling body (3) for receiving a tube (5) of a pressurized fluid system, a leakage seal (7) for preventing fluid supplied from the pressurized fluid system via the tube to enter the coupling body (3), a gripping member (9) for gripping the outer surface of the tube (5) received in the coupling body (3), and an environment seal (11) for preventing intrusion from outside of the coupling body (3), characterized in that said environment seal (11) is at least partially displaceable and arranged to be pressed at least partially off a sealing seat when there is internal fluid pressure in the coupling body (3) resulting in a fluid stream out of the coupling body (3) and said fluid stream to the outside of the coupling body (3) indicates a leakage from the pressurized fluid system.

대표청구항 ▼

1. A tube coupling system (1) for a pressurised fluid system having a tube (5) defining an outer surface with a fluid flowing through the tube (5), said tube coupling system comprising: a coupling body (3) for receiving the tube (5),a leakage seal (7) disposed within said body (3) for preventing the

1. A tube coupling system (1) for a pressurised fluid system having a tube (5) defining an outer surface with a fluid flowing through the tube (5), said tube coupling system comprising: a coupling body (3) for receiving the tube (5),a leakage seal (7) disposed within said body (3) for preventing the fluid supplied from the tube (5) from entering said coupling body (3),a gripping member (9) disposed within said body (3) for gripping the outer surface of the tube (5) received in said coupling body (3),a protrusion (24) coupled to said body (3) and defining at least a portion of a sealing seat, andan environment seal disposed within said body (3) and (11) having a first position engaging said sealing seat for sealing said coupling body (3), and a second position at least partially displaceable and arranged to be pressed at least partially off said sealing seat when there is internal fluid pressure in said coupling body (3) for allowing the fluid to flow out of said coupling body (3) to indicate a leakage;wherein at least one part of said environmental seal (11) is arranged to remain in contact with said sealing seat when there is internal fluid pressure in said coupling body (3). 2. A tube coupling system according to claim 1, wherein said environmental seal (11) is at least partially resiliently deformable by said internal fluid pressure in said coupling body (3). 3. A tube coupling system (1) for a pressurised fluid system having a tube (5) defining an outer surface with a fluid flowing through the tube (5), said tube coupling system comprising: a coupling body (3) for receiving the tube (5),a leakage seal (7) disposed within said body (3) for preventing the fluid supplied from the tube (5) from entering said coupling body (3),a gripping member (9) disposed within said body (3) for gripping the outer surface of the tube (5) received in said coupling body (3),a protrusion (24) coupled to said body (3) and defining at least a portion of a sealing seat,an environment seal disposed within said body (3) and (11) having a first position engaging said sealing seat for sealing said coupling body (3), and a second position at least partially displaceable and arranged to be pressed at least partially off said sealing seat when there is internal fluid pressure in said coupling body (3) for allowing the fluid to flow out of said coupling body (3) to indicate a leakage; anda plurality of stopper protrusions (26) coupled to said body (3) and spaced from each other about an inner surface of said body (3) to define axially outer cut-outs spaced between said stopper protrusions (26) and said stopper protrusions (26) extend axially inwards to form contact surfaces (30) to keep said environmental seal (11) partially in contact with said sealing seat. 4. A tube coupling system (1) for a pressurised fluid system having a tube (5) defining an outer surface with a fluid flowing through the tube (5), said tube coupling system comprising: a coupling body (3) for receiving the tube (5),a leakage seal (7) disposed within said body (3) for preventing the fluid supplied from the tube (5) from entering said coupling body (3),a gripping member (9) disposed within said body (3) for gripping the outer surface of the tube (5) received in said coupling body (3),a protrusion (24) coupled to said body (3) and defining at least a portion of a sealing seat,an environment seal disposed within said body (3) and (11) having a first position engaging said sealing seat for sealing said coupling body (3), and a second position at least partially displaceable and arranged to be pressed at least partially off said sealing seat when there is internal fluid pressure in said coupling body (3) for allowing the fluid to flow out of said coupling body (3) to indicate a leakage; andan insert (21) defining an annular groove and supporting said protrusion (24) for selectively receiving said environmental seal (11). 5. A tube coupling system according to claim 4, wherein said environmental seal (11) is further defined as an o-ring (11) engaging said annular groove of said insert and said annular groove presents an axially outer cut-out allowing said o-ring (11) to be at least partially pressed off said sealing seat when there is internal fluid pressure in said coupling body (3). 6. A tube coupling system according to claim 5, wherein said insert (21) defines a bore (22) extending axially from said annular groove for allowing the fluid to flow out of said coupling body (3) when said o-ring (11) is at least partially pressed off said sealing seat due to said internal fluid pressure in said coupling body (3). 7. A tube coupling system according to claim 4, wherein said annular groove presents an axially inner portion having a surface defining another portion of said sealing seat. 8. A tube coupling system according to claim 7, wherein said annular groove presents an axially outer cut-out allowing said environmental seal (11) to be at least partially pressed off said sealing seat when there is internal fluid pressure in said coupling body (3). 9. A tube coupling system according to claim 8, wherein said insert (21) defines an inner circumference and includes a plurality of stopper protrusions (26) spaced from each other along said inner circumference with said stopper protrusions (26) extending axially inwards to present contact surfaces (30) for allowing at least one part of said environmental seal (11) to remain in contact with said sealing seat when in said first and second positions. 10. A tube coupling system according to claim 9, wherein said insert (21) defines a bore (22) extending axially from said annular groove for allowing the fluid to flow out of said coupling body (3) when said environmental seal (11) is at least partially pressed off said sealing seat in said second position. 11. A tube coupling system according to claim 4, wherein said insert (21) defines an inner circumference and includes said protrusion (24) extending from said inner circumference. 12. A tube coupling system according to claim 11, wherein said protrusion (24) is further defined as a plurality of protrusions (24) spaced from each other about said inner circumference of said insert (21) with each of said protrusions (24) having an inner end facing said environmental seal (11). 13. A tube coupling system according to claim 12, wherein said insert includes a plurality of stopper protrusions (26) spaced from each other about said inner circumference of said insert (21) with each of said stopper protrusions (26) spaced axially away from each of said protrusions (24). 14. A tube coupling system according to claim 13, wherein each of said stopper protrusions (26) present a contact surface (30) facing said inner end of said protrusions (24). 15. A tube coupling system according to claim 14, wherein at least one of said stopper protrusions (26) defines a first distance between said inner end of said protrusions (24) and said contact surfaces (30) of said at least one stopper protrusions (26) such that said environmental seal (11) engages said contact surfaces (30) when in said first position. 16. A tube coupling system according to claim 15, wherein another one of said stopper protrusions (26) define a second distance between said inner end of said protrusions (24) and said contact surfaces (30) of said another one of said stopper protrusions (26) with said second distance greater than said first distance for allowing said environmental seal (11) to move from said first position to said second position. 17. A tube coupling system according to claim 12, wherein said protrusions (24) have a segmented inner portion defining a conical configuration and said gripping member (9) has an outer surface defining a conical configuration complementary to said conical configuration of said segmented inner portion such that said outer surface engages said segmented inner portion.