Mobile congeneration apparatus including inventive valve and boiler

• US 5,517,822 A
• Filed: 06/15/1993
• Issued: 05/21/1996
• Est. Priority Date: 06/15/1993
• Status: Expired due to Term

• Current Assignee: AGC Manufacturing Services, Inc., Applied Energy Systems Of Oklahoma, Inc.
• Original Assignee: Applied Energy Systems Of Oklahoma, Inc.
• Inventors: Schwerzel, George W., Messner, Dennis L., Cox, Tommy R., Cousino, Dennis J., Denton, Dennis L., Tighe, James H., Cullens, Cordell, Helean, William P., King, James W., Gilbert, Glenn R., Hutson, Jackie L., Ketrick, David M., Payne, Donald E., Coombs, James L., Haws, Michael G.
• Primary Examiner(s): Bennett, Henry A.
• Assistant Examiner(s): TINKER, SUSANNE CHRISTINE
• Application Number:
  US08/077,135
• Time in Patent Office: 1,071 Days
• Field of Search: 110/234, 110/240, 110/198, 110/199, 237/12.1, 60/648, 122/1 R
• US Class Current: 60/618
• CPC Class Codes: F01K 17/025 in combination with at least one gas turbine, e.g. a combustion gas turbine
• CPC Class Codes: F01K 23/103 with afterburner in exhaust boiler
• CPC Class Codes: F16K 11/052 with pivoted closure members, e.g. butterfly valves
• CPC Class Codes: F22B 1/1815 using the exhaust gases of gas-turbines
• CPC Class Codes: Y02E 20/14 Combined heat and power generation [CHP]

Abstract

A cogeneration apparatus comprising: a transporting structure, including a support frame, for transporting the cogeneration apparatus; an electrical generator, mountable on the support frame, for generating an electrical current; a driver, mountable on the support frame, for driving the electrical generator, said driver producing an exhaust gas when operated; and a heat recovery assembly, mountable on the support frame, for recovering heat from the exhaust gas. A novel valve and a novel boiler system preferred for use in the inventive cogeneration apparatus are also provided.

Claims

1. A mobile cogeneration apparatus comprising:

a support structure having a plurality of wheels operably associated therewith for moving said support structure;

a first electrical generator mountable on said support structure;

a second electrical generator mountable on said support structure;

a first engine mountable on said support structure and associatable with said first electrical generator such that said first engine is operable for driving said first electrical generator, said first engine having an exhaust gas outlet;

a second engine mountable on said support structure and associatable with said second electrical generator such that said second engine is operable for driving said second electrical generator, said second engine having an exhaust gas outlet;

a boiler mountable on said support structure, said boiler having an exhaust gas inlet;

conduit means for conducting exhaust gas from said exhaust gas outlets of said engines to said exhaust gas inlet of said boiler;

discharge means for selectively discharging at least a portion of said exhaust gas before said portion of exhaust gas enters said exhaust gas inlet of said boiler; and

diverter means, positionable in said conduit means, for selectively diverting said portion of said exhaust gas to said discharge means.

2. An apparatus as described in claim 1 wherein said diverter means includes at least one diverter valve, said diverter valve comprising:

a housing having an inlet port, a first outlet port, and a second outlet port;

a valve element support member pivotably mountable in said housing; and

a valve element associatable with said valve element support member by means of a spherical bearing assembly,

said valve element being positionable, by pivoting said valve element support member, for selectively sealing said outlet ports such that, when said valve element is positioned to fully close a selected one of said outlet ports, the other of said outlet ports is open.

3. An apparatus as described in claim 2 wherein:

said diverter valve further comprises a first sealing means positionable in said housing around said first outlet port and

said diverter valve further comprises a second sealing means positionable in said housing around said second outlet port,

wherein, as said valve element is positioned to close said first outlet port, said valve element will pivot with respect to said valve element support member as necessary by means of said spherical bearing assembly such that said valve element sealingly contacts said first sealing means around substantially the entire periphery of said first outlet port and

as said valve element is positioned to close said second outlet port, said valve element will pivot with respect to said valve element support member as necessary by means of said spherical bearing assembly such that said valve element sealingly contacts said second sealing means around substantially the entire periphery of said second outlet port.

4. An apparatus as described in claim 1 further comprising:

a first mounting member secured to said support structure and

a second mounting member secured to said support structure such that said second mounting member is spaced apart from said first mounting member,

said first mounting member having an upwardly extending side portion and a substantially planar surface, said substantially planar surface extending horizontally from said side portion toward said second mounting member,

said second mounting member having an upwardly extending side portion and a substantially planar surface, said substantially planar surface of said second mounting member extending horizontally from said side portion of said second mounting member toward said first mounting member, and

said boiler having a base structure,

wherein said side portion of said first mounting member is spaced apart from said side portion of said second mounting member by a distance corresponding to the width of said base structure of said boiler such that said boiler can be mounted on and removed from said support structure by sliding said base structure of said boiler on top of said substantially planar surfaces with said base structure positioned between said upwardly extending side portions.

5. An apparatus as described in claim 1 wherein said boiler comprises:

a boiler housing;

a first drum;

a second drum;

a first set of vertical boiler tubes positioned inside said boiler housing;

a second set of vertical boiler tubes positioned inside said boiler housing;

first conduit means for conducting water from said first drum to said first set of tubes;

second conduit means for conducting water between said drums and for conducting water to said second set of tubes;

third conduit means for conducting substantially all of the steam generated in said first set of tubes from said first set of tubes to one of said first and second drums; and

fourth conduit means for conducting substantially all of the steam generated in said second set of tubes from said second set of tubes to the other of said first and second drums.

6. An apparatus as described in claim 5 wherein:

said boiler housing has an exhaust gas outlet;

said exhaust gas inlet is provided in said boiler housing;

said boiler further comprises a superheater means, positioned in said boiler housing, for superheating steam from said drums;

at least one of said vertical boiler tubes in said first set of vertical boiler tubes is positioned between said exhaust gas inlet of said boiler housing and said superheater means;

a plurality of said vertical boiler tubes in said first set of vertical boiler tubes are positioned between said superheater means and said exhaust gas outlet of said boiler housing;

at least one of said vertical boiler tubes in said second set of vertical boiler tubes is positioned between said exhaust gas inlet of said boiler housing and said superheater means; and

a plurality of said vertical boiler tubes in said second set of vertical boiler tubes are positioned between said superheater means and said exhaust gas outlet of said boiler housing.

7. An apparatus as described in claim 1 wherein:

said conduit means includes first conduit means for conducting exhaust gas from said exhaust gas outlet of said first engine to said exhaust gas inlet of said boiler;

said conduit means further includes second conduit means for conducting exhaust gas from said exhaust gas outlet of said second engine to said exhaust gas inlet of said boiler;

said diverter means comprises a first diverter valve positioned in said first conduit means, said first diverter valve being operable for diverting at least a portion of said exhaust gas from said exhaust gas outlet of said first engine to said discharge means; and

said diverter means further comprises a second diverter valve positioned in said second conduit means, said second diverter valve being operable for diverting at least a portion of said exhaust gas from said exhaust gas outlet of said second engine to said discharge means.

8. An apparatus as described in claim 1 further comprising:

a housing frame structure connected to said support structure, said housing frame structure including a top frame structure spaced above said support structure;

an air filter structure removably mountable on top of said frame structure; and

second conduit means for conducting air from said air filter structure to an air inlet port in said first engine and to an air inlet port in said second engine.

9. A cogeneration apparatus comprising:

transporting means for transporting said cogeneration apparatus, said transporting means including a support frame;

electrical generator means, mountable on said support frame, for generating an electrical current;

driving means, mountable on said support frame, for driving said electrical generator means, said driving means producing an exhaust gas when operated;

heat recovery means, mountable on said support frame, for recovering heat from said exhaust gas;

exhaust discharge means for discharging at least a portion of said exhaust gas before said portion of said exhaust gas enters said heat recovery means; and

diverter means for selectively diverting said portion of said exhaust gas to said exhaust discharge means,

wherein said diverter means comprises;

a housing having an inlet port, a first outlet port, and a second outlet port;

a valve element support member pivotably mountable in said housing;

a valve element; and

a spherical bearing assembly operable for associating said valve element with said valve element support member,

said valve element being positionable, by pivoting said valve element support member, for selectively sealing said outlet ports such that, when said valve element is positioned to fully close a selected one of said outlet ports, the other of said outlet ports is open.

10. The cogeneration apparatus of claim 9 wherein said valve element is positionable such that each of said outlet ports is at least partially open.

11. The cogeneration apparatus of claim 9 wherein said spherical bearing assembly is operable for allowing said valve element to pivot a sufficient distance in substantially any direction with respect to said valve element support member such that

as said valve element is positioned to close said first outlet port, said valve element will pivot with respect to said valve element support member as necessary such that said valve element substantially fully contacts a first outlet port seal and

as said valve element is positioned to close said second outlet port, said valve element will pivot with respect to said valve element support member as necessary such that said valve element substantially fully contacts a second outlet port seal,

said first outlet port seal being positioned in said housing such that said first outlet port seal substantially completely surrounds said first outlet port and

said second outlet port seal being positioned in said housing such that said second outlet port seal substantially completely surrounds said second outlet port.

12. A cogeneration apparatus comprising:

transporting means for transporting said cogeneration apparatus, said transporting means including a support frame;

electrical generator means, mountable on said support frame, for generating an electrical current;

driving means, mountable on said support frame, for driving said electrical generator means, said driving means producing an exhaust gas when operated; and

heat recovery means, mountable on said support frame, for recovering heat from said exhaust gas,

wherein said heat recovery means is a boiler comprising;

a boiler housing;

a first drum;

a second drum;

a first set of vertical boiler tubes positioned inside said boiler housing;

a second set of vertical boiler tubes positioned inside said boiler housing;

first conduit means for conducting water between said drums and for conducting water to said first set of tubes;

second conduit means for conducting water between said drums and for conducting water to said second set of tubes;

third conduit means for conducting substantially all of the steam generated in said first set of tubes from said first set of tubes to one of said first and second drums; and

fourth conduit means for conducting substantially all of the steam generated in said second set of tubes from said second set of tubes to the other of said first and second drums.

13. The cogeneration apparatus of claim 12 wherein:

said boiler housing has an inlet wherein said exhaust gas enters said boiler housing;

said boiler housing has an outlet wherein said exhaust gas exits said boiler housing;

said boiler further comprises a superheater means, positioned in said boiler housing, for superheating steam from said drums;

said first set of tubes comprises (a) at least one vertical tube positioned between said inlet of said boiler housing and said superheater means and (b) a plurality of vertical tubes positioned between said outlet of said boiler housing and said superheater means; and

said second set of tubes comprises (a) at least one vertical tube positioned between said inlet of said boiler housing and said superheater means and (b) a plurality of vertical tubes positioned between said outlet of said boiler housing and said superheater means.

14. A cogeneration apparatus comprising:

transporting means for transporting said cogeneration apparatus, said transporting means including a support frame;

electrical generator means, mountable on said support frame, for generating an electrical current;

driving means, mountable on said support frame, for driving said electrical generator means, said driving means producing an exhaust gas when operated; and

heat recovery means, mountable on said support frame, for recovering heat from said exhaust gas,

said electrical generator means comprising a first electrical generator and a second electrical generator,

said driving means comprising a first engine operably associatable with said first electrical generator for driving said first electrical generator,

said driving means further comprising a second engine operably associatable with said second electrical generator for driving said second electrical generator,

said first engine and said first electrical generator can be operated simultaneously with said second engine and said second electrical generator, and

said first engine and said first electrical generator can be operated when said second engine and said second electrical generator are not in operation.

15. The cogeneration apparatus of claim 14 wherein:

said first engine has an exhaust gas outlet;

said second engine has an exhaust gas outlet;

said heat recovery means has an exhaust gas inlet;

said cogeneration apparatus further comprises first conduit means for conducting exhaust gas from said exhaust gas outlet of said first engine to said exhaust gas inlet;

said cogeneration apparatus further comprises second conduit means for conducting exhaust gas from said exhaust gas outlet of said second engine to said exhaust gas inlet;

said cogeneration apparatus further comprises exhaust discharge means for discharging at least a portion of the exhaust gas from said engines before said portion of exhaust gas enters said exhaust gas inlet of said heat recovery means;

said cogeneration apparatus further comprises a first diverter valve positionable in said first conduit means, said first diverter valve being operable for selectively diverting at least a portion of the exhaust gas from said exhaust gas outlet of said first engine to said discharge means; and

said cogeneration apparatus further comprises a second diverter valve positioned in said second conduit means, said second diverter valve being operable for selectively diverting at least a portion of the exhaust gas from said exhaust gas outlet of said second engine to said discharge means.