IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0542371
(2009-08-17)
|
등록번호 |
US-8210029
(2012-07-03)
|
발명자
/ 주소 |
- Hart, Dennis L.
- Gonzalez, Cristobal
- O'Neil, Virgil E.
- Jaramillo, Jeffrey A.
- Brown, Larry D.
|
출원인 / 주소 |
|
대리인 / 주소 |
Stetina Brunda Garred & Brucker
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
65 |
초록
▼
A pipeline pressure testing assembly has a fitting defining a flow path and having a port on a wall of the fitting into which a pressure testing device is removably inserted along a central axis of the port for pressure testing. The port is circular, larger than the interior diameter of the pipeline
A pipeline pressure testing assembly has a fitting defining a flow path and having a port on a wall of the fitting into which a pressure testing device is removably inserted along a central axis of the port for pressure testing. The port is circular, larger than the interior diameter of the pipeline and located at or above the tube forming the flow path through the fitting. The fitting has a recess encircling at least part of the flow path and opening to the port to receive the testing and sealing devices. The recess is formed by two opposing walls inclined relative to the central axis of the recess. The recess walls at the top of the flow path by the port are spaced apart a distance as large as the pipe diameter for cleanout and inspection. A tubular valve stem screws into the testing device and has a rotary valve blocking flow through the tubular valve stem. Flow through the fitting is blocked with the rotary valve closed and the tubular valve stem in a first position. Flow through the testing device is allowed with the rotary valve closed and the tubular valve stem in an open position. With the rotary valve open, flow through the tubular valve stem is permitted when the tubular valve stem is in either the first or second position to provide multiple drain and fill options.
대표청구항
▼
1. A removable pressure testing device for use in testing the pressure in a pipe line having an interior diameter and having a fitting with a flow path through the fitting along a longitudinal axis of the flow path, the fitting having a port and a recess encircling a portion of the flow path opposit
1. A removable pressure testing device for use in testing the pressure in a pipe line having an interior diameter and having a fitting with a flow path through the fitting along a longitudinal axis of the flow path, the fitting having a port and a recess encircling a portion of the flow path opposite the port and into which the testing device is inserted to block fluid flow through the fitting for testing, the pressure testing device sized to removably fit through the port during use, the pressure testing device comprising: a top configured to mate with the port,a continuous sidewall extending between opposing sides of the top and depending from the top a distance sufficient to block the flow path when the device is inserted into the fitting;two opposing faces joined to the sidewall and to the top to form an enclosed structure, each face joined to one of the surfaces on the top, one face being an upstream face and the other a downstream face, the faces and sidewall configured to form a fluid tight seal with the recess in the fitting during use;a first opening in the upstream face, the first opening being located to be placed within the fluid flow path through the fitting when the testing device blocks flow through the fitting;a second opening in the downstream face, the second opening being located to be placed within the fluid flow path through the fitting when the testing device blocks flow through the fitting;a first fluid passage placing the first and second openings in fluid communication;a dual valve assembly having first and second independent, manually actuatable valves in fluid communication through a second fluid passage in the pressure testing device, the first valve having a first closed position that blocks flow through the first fluid passage and having a second open position that allows flow through the first fluid passage, the second valve having a fluid outlet that is accessible externally of the testing device and having a first closed position blocking flow through the second valve outlet and further having a second open position allowing fluid flow through the first valve and the second valve outlet. 2. The pressure testing device of claim 1, wherein the top has a flat, circular periphery. 3. The pressure testing device of claim 1, wherein when the first and second valves are both in a first, closed position, fluid flow through the fitting and into or out of the fitting through the outlet are all blocked, when the first and second valves are both in a second, open position, fluid can flow through the fitting and flow out of the fitting through the outlet, when the first valve is open and the second valve is closed then fluid can flow through the fitting but not through the second valve and its outlet, and when the first valve is closed and the second valve is open then fluid can flow into or out of the fitting through the outlet but not through the first fluid passage. 4. The pressure testing device of claim 3, wherein the first valve comprises a tubular valve stem forming the second fluid path and having a valve member thereon cooperating with a valve seat to form the closed position that blocks flow through the first fluid passage and to form the open position that allows flow through the first fluid passage, and wherein the second valve is mounted on the valve stem with the fluid outlet aligned with the valve stem. 5. The pressure testing device of claim 4, wherein the tubular valve stem has a first valve surface on a distal end of the tubular valve stem cooperating with a mating valve surface on the first opening to form the first and second positions of the tubular valve stem. 6. The pressure testing device of claim fluid 4, further comprising a member extending from the tubular valve stem configured to be manually gripped. 7. The pressure testing device of claim 4, further comprising an insert that is configured to fit between the testing device and the fitting during use, the insert configured to abut and form a fluid tight seal with the recess in the fitting, the insert abutting portions of the opposing faces and sidewall. 8. The pressure testing device of claim 4, wherein the pressure testing device further comprises a tube located between the faces and in fluid communication with at least one of the first and second openings in the faces, a portion of the tubular valve stem extending through the tube. 9. The pressure testing device of claim 8 wherein the tubular valve stem translates within the tube between the first and second positions. 10. The pressure testing device of claim 8, wherein the tubular valve stem and tube have mating threads with the valve stem being rotated to translate between the open and closed positions of the first valve. 11. The pressure testing device of claim 8, wherein the second valve comprises a rotary valve located in the tubular valve stem. 12. The pressure testing device of claim 4, wherein the second valve comprises a rotary valve located in the tubular valve stem. 13. The pressure testing device of claim 12, wherein the fluid outlet of the second valve comprises an external end of the tubular valve stem. 14. The pressure testing device of claim 13, wherein the external end is threaded. 15. A pressure testing assembly for use in testing the pressure in a pipe line having an interior diameter and having walls defining a flow path through the fitting along a longitudinal axis, the pressure testing assembly comprising: a fitting comprising:a port having interior walls defining an opening that is accessible from outside the fitting, the opening being centered on a central axis intersecting with and orthogonal to the longitudinal axis, the port having threads thereon encircling the central axis;two oppositely inclined, flat recess walls on opposing sides of the centerline, each flat wall defining an opening through which the flow path and longitudinal axis pass, the walls spaced apart a distance sufficient so that a ball about 5 inches smaller than the nominal diameter of the pipeline, can pass through the port and the flow path in the fitting, the flat walls opposite the port being closer together, the fitting walls defining a recess that at least partially encircles the flow path and opens to the circular port;a pressure testing device inserted into the recess to pressure test the pipe line, the pressure testing device, comprising:a circular top having two opposing surfaces, the top having a diameter larger than the interior diameter of the pipeline and sized to mate with the circular port;a continuous sidewall located between the opposing surfaces, the sidewall extending between opposing sides of the top and depending from the top a distance sufficient to fit into the recess in the fitting and block the flow path when the device is inserted into the fitting;two, opposing faces joined to the sidewall and to the top to form an enclosed structure, each face joined to one of the surfaces on the top, one face being an upstream face and the other a downstream face, at least one of the faces forming a fluid tight seal with one of the recess walls in the fitting;a first opening in the upstream face, the first opening located within the fluid flow path through the fitting;a second opening in the downstream face, the second opening being located within the fluid flow path through the fitting;a fluid passage placing the first and second openings in fluid communication;a tubular valve stem having a first position that blocks flow from the first opening to the second opening and a second position that allows flow through the first and second openings, the tubular valve stem having a fluid passage therethrough in fluid communication with the first opening;a second valve on the tubular valve stem which second valve has a fluid outlet that is accessible externally of the testing device, the second valve being in fluid communication with the fluid passage through the valve stem and having a first position allowing fluid flow through the tubular valve stem and through the second valve outlet, the second valve having a second position blocking flow through the second valve outlet;a retaining ring removably fastened to the fitting to hold the pressure testing device within the fitting;a sealing ring encircling the port to provide a fluid tight seal. 16. The pressure testing assembly of claim 15, wherein the tubular valve stem further includes a handle for manual gripping and manipulation of the tubular valve stem. 17. The pressure testing assembly of claim 15, wherein the recess in the fitting has a curved recess wall extending between opposing faces at one side of the port and encircling at least part of the flow path and ending at an opposing side of the port. 18. The pressure testing assembly of claim 15, wherein the opposing fitting walls are inclined at an angle of about 7-20 degrees to a plane containing the central axis and orthogonal to the longitudinal axis, and wherein the faces of the pressure testing device face an adjacent fitting wall and are inclined at about the same angle as the adjacent fitting wall. 19. The pressure testing assembly of claim 15, wherein the upstream opening is located in a first recess formed in the upstream face, and is further located in a top wall, with the downstream opening located in a second recess formed in the downstream face, with the top wall of the first recess forming a bottom wall of the second recess. 20. The pressure testing assembly of claim 15, wherein the pressure testing device further comprises a tube located between the faces and in fluid communication with at least one of the first and second openings in the faces, a portion of the tubular valve stem extending through the tube. 21. The pressure testing assembly of claim 20, wherein the tubular valve stem and tube have mating threads with the tubular valve stem being rotated to translate between the first and second positions. 22. The pressure testing assembly of claim 15, wherein the tubular valve stem comprises a tube having a first valve surface on a distal end cooperating with a mating valve surface on the first opening to form the first position of the tubular valve stem. 23. The pressure testing assembly of claim 22, wherein the second valve comprises a rotary valve located in the tubular valve stem. 24. The pressure testing assembly of claim 15, wherein the fluid outlet of the second valve comprises an external threaded end of the tubular valve stem. 25. A pressure testing assembly for pipelines with a dual valve assembly, comprising a fitting having walls defining a flow path through the fitting;a port defining a circular opening and located on one side of the fitting, the opening large enough for a cleanout device, the fitting having walls defining at least a portion of a recess around the flow path and opening onto the port, the recess being configured to allow the cleanout device to pass through the fitting;a test device configured to fit into the recess and form a fluid tight seal with at least one wall of the recess to block flow through the flow path through the fitting, the test device having an opening on each of an upstream and downstream side of the device with the upstream and downstream openings being in fluid communication;a dual valve assembly located in the test device and having a first and second valve with an end of the valve assembly being externally accessible to operate both valves, the first valve being in fluid communication with the upstream and downstream openings to open and close fluid flow through the upstream and downstream openings, the first valve having a fluid flow path therethrough in fluid communication with the second valve, the second valve having a fluid flow path therethrough having an end located outside the fitting, the second valve opening and closing fluid flow to the end located outside the fitting.
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