Tank assembly
A polymeric tank assembly is provided having a polymeric container with a neck opening. A ring with protruding barbs is inserted within the neck opening and the neck opening is placed in compression by a surround collar. The ring can be connected with clamping arms which can be engaged by a clamping ring which retains an instrument within the tank assembly.
1. A polymeric tank assembly, comprising:
a polymeric container having an opening neck with interior and exterior surfaces;
a ring closely fitted within said neck interior surface with locking protrusions engaging with said neck and penetrating said neck interior surface, wherein said ring has a locking ring connected thereto, and wherein said locking ring has a clamping arm connected thereto; and
a collar fitted over said neck exterior surface with a portion opposite said ring protrusions, placing said neck in compression.
2. A tank assembly as described in claim 1 , wherein said polymeric material is plastic.
3. A tank assembly as described in claim 2 , wherein said plastic swells when exposed to a liquid hydrocarbon.
4. A tank assembly as described in claim 1 , wherein said polymeric material is blow molded.
5. A tank assembly as described in claim 1 , wherein said polymeric material is roto-molded.
6. A tank assembly as described in claim 1 , further including a sealing member between said ring and said neck interior surface.
7. A tank assembly as described in claim 6 , wherein said sealing member is spray-applied.
8. A tank assembly as described in claim 6 , wherein said sealing member is made from a Teflon® material.
9. A tank assembly as described in claim 1 , wherein said ring is more rigid than said collar.
10. A tank assembly as described in claim 1 , wherein said ring is press fitted within said neck.
11. A tank assembly as described in claim 1 , having a fluid fitting fixably connected with said ring.
12. A tank assembly as described in claim 11 , wherein said fluid fitting is threaded for threaded connection with a fluid conduit.
13. A tank assembly as described in claim 1 , wherein an instrument insert for said tank is connected with said tank by rotating a clamping plate which interlocks with said clamping arm.
14. A fuel tank assembly as described in claim 13 , wherein said clamping plate clamps down on a module flange and wherein said instrument is connected with said module flange.
15. A polymeric tank assembly comprising:
a polymeric container having an opening neck with interior and exterior surfaces;
a ring closely fitted within said neck interior surface with protrusions penetrating said neck interior surface;
a collar fitted over said neck exterior surface placing said neck in compression;
said ring being connected with a locking ring having connected thereto a clamping arm; and
a clamping ring for connection to said tank by rotating and interlocking with said clamping arm.
16. A tank assembly as described in claim 15 , wherein said clamping ring has slots for receiving said clamping arm and wherein said clamping ring has a series of mounds brought into engagement with slots of the clamping arm causing said clamping ring to clamp down.
17. A tank assembly as described in claim 16 , wherein said clamping ring has a retainer tab preventing inadvertent rotation of the clamping ring.
18. A tank assembly as described in claim 15 , wherein a module flange is pushed down by said clamping ring.
19. A tank assembly as described in claim 18 , wherein said module flange is connected with an instrument positioned in said polymeric container.
20. A tank assembly as described in claim 1 , wherein said collar is an endless ring.