In a pipeline system having a plurality of pipe segments joining a fluid supply tank to a fluid dispenser, the invention includes a pipe coupling assembly for use on at least one terminal end of a fluid transfer pipe, where the transfer pipe has an inner tubular member for transferring fluid and an
In a pipeline system having a plurality of pipe segments joining a fluid supply tank to a fluid dispenser, the invention includes a pipe coupling assembly for use on at least one terminal end of a fluid transfer pipe, where the transfer pipe has an inner tubular member for transferring fluid and an outer tubular member and an interstitial space there between. The coupling assembly comprises a transition coupling for attachment to the pipe segment to provide a first path for the fluid in the inner tubular member and a second path for the interstitial space. The coupling assembly further comprises a transition tube assembly for attachment to the transition coupling to provide separate paths for the transfer fluid and the interstitial space, where the interstitial space provides a means for performing leak detection or fitting integrity tests during application of either a vacuum condition or pressurized gas input via such selective access.
대표청구항▼
I claim: 1. A pipe system for distributing fluids from a storage tank to one or more dispensers comprising: an originating adaptor fitting located at the tank and shear valves located at each of the one or more dispensers; a pipe segment extending between the adaptor fitting and one of the shear va
I claim: 1. A pipe system for distributing fluids from a storage tank to one or more dispensers comprising: an originating adaptor fitting located at the tank and shear valves located at each of the one or more dispensers; a pipe segment extending between the adaptor fitting and one of the shear valves, said pipe segment having an interstitial space between an inner and an outer pipe; a transition coupling connecting the adaptor fitting to the pipe segment, said transition coupling comprising a ferrule, an insert, a means for securing the coupling to the adaptor fitting; said transition coupling further comprising sealing means for preventing fluid leakage from the coupling connection to the fitting, said coupling further comprising sealing means for preventing fluid leakage from the interstitial space between the inner and outer pipes, and further comprising an interstitial access port for connecting a tube that provides access to the interstitial space between the inner and outer pipes. 2. The piping system of claim 1, wherein the sealing means for preventing leakage from the coupling connection to the fitting and the sealing means for preventing leakage from the interstitial space of the pipe are O-rings. 3. The piping system of claim 1, wherein the sealing means for preventing leakage from the coupling connection to the fitting is a butt seal compressed between the coupling insert and the adaptor fitting. 4. The piping system of claim 1, wherein the means for securing the transition coupling to the fitting include a threaded end on the adaptor fitting and a swivel locking nut on the coupling. 5. The piping system of claim 1, further comprising a tube assembly for attachment to the transition coupling interstitial access port for testing and monitoring the interstitial space of the piping system. 6. A pipe system for distributing fluids from a storage tank to one or more dispensers comprising: a plurality of dispenser sumps, each housing a shear valve having inlet and outlet ports for respectively receiving and transmitting fluid in a piping system, a double-walled pipe having an interstitial space between an inner pipe and an outer pipe, said pipe comprising an inlet pipe segment and an outlet pipe segment for connection to each shear valve port, each pipe segment joined to the respective inlet and outlet ports of the shear valve by a transition coupling, said transition coupling comprising; a ferrule, an insert, a means for securing the coupling to the adaptor fitting; said transition coupling further comprising sealing means for preventing fluid leakage from the coupling connection to the fitting, said coupling further comprising sealing means for preventing fluid leakage from the interstitial space between the inner and outer pipes, and further comprising an interstitial access port for connecting a tube that provides access to the interstitial space between the inner and outer pipes. 7. The piping system of claim 6, wherein the sealing means for preventing leakage from the coupling connection to the shear valve and the sealing means for preventing leakage from the interstitial space of the pipe are O-rings. 8. The piping system of claim 6, wherein the sealing means for preventing leakage from the coupling connection to the shear valve is a butt seal compressed between the coupling insert and the shear valve port. 9. The piping system of claim 6, wherein the means for securing the transition coupling to the fitting include a threaded end on the adaptor fitting and a swivel locking nut on the coupling. 10. The piping system of claim 6, wherein a tube is connected from the interstitial access port of the transition coupling at the shear valve inlet port to the transition coupling of the shear valve outlet port, said tube providing a continuous path around the shear valve for the interstitial space of the double-wall pipe. 11. The piping system of claim 6, further comprising a tube assembly for attachment to the transition coupling interstitial access port for testing and monitoring the interstitial space of one or more pipe segments. 12. The piping system of claim 6 wherein said interstitial access port is connected with a test tube for continuous monitoring of the integrity of the double-wall pipe system interstitial space. 13. A piping system of double-wall pipe having an interstitial space between an inner and an outer pipe, comprising: one or more pipe sections each pipe section connecting to one or more fittings selected from the group consisting of adaptor fittings, shear valves, and terminating elbow fittings, wherein the connections between each fitting and pipe section is made with a transition coupling comprising a ferrule, an insert, a means for securing the coupling to the fitting; said transition coupling further comprising sealing means for preventing fluid leakage from the transition coupling connection to the fitting, said coupling further comprising sealing means for preventing fluid leakage from the interstitial space between the inner and outer pipes, and further comprising an interstitial access port for connecting a tube that provides access to the interstitial space between the inner and outer pipes. 14. The piping system of claim 13, wherein the sealing means for preventing leakage from the coupling connection to the fitting is a butt seal compressed between the coupling insert and the fitting. 15. The piping system of claim 13, wherein the means for securing the transition coupling to the fitting includes a threaded end on the fitting and a swivel locking nut on the coupling. 16. The piping system of claim 13, wherein the ferrule and insert are a single-piece construction. 17. The piping system of claim 16, wherein said single-piece ferrule and insert comprises: a dual cylindrical portion having an outer cylinder and an inner cylinder, wherein the outer cylinder is the ferrule and the inner cylinder is an insert into the double-wall pipe; the outer cylinder comprising barbs on its inner surface for engagement with the outer pipe of the double-wall pipe, the inner cylinder comprising barbs on its outer surface for engagement with the inner pipe of the double-wall pipe. 18. The piping system of claim 13, further comprising a tube assembly for attachment to the transition coupling interstitial access port for testing and monitoring the interstitial space of one or more pipe segments. 19. The piping system of claim 13 wherein said interstitial access port is connected with a test tube for continuous monitoring of the integrity of the double-wall pipe system interstitial space.
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이 특허에 인용된 특허 (5)
Sharp Bruce R., Adapter assembly for accessing primary pipeline of a double wall pipeline system.
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