US3600116A - Air-control system for apparatus displacing material by combustive explosions - Google Patents

Air-control system for apparatus displacing material by combustive explosions

Info

Publication number
US3600116A
US3600116A US3600116DA US3600116A US 3600116 A US3600116 A US 3600116A US 3600116D A US3600116D A US 3600116DA US 3600116 A US3600116 A US 3600116A
Authority
US
United States
Prior art keywords
air
valve
pressure
combustion chamber
control line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
John M Clark Jr
Allan R Nye
Charies D Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwest Research Institute SwRI
Original Assignee
Southwest Research Institute SwRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southwest Research Institute SwRI filed Critical Southwest Research Institute SwRI
Application granted granted Critical
Publication of US3600116A publication Critical patent/US3600116A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/8883—Using the force of explosions, e.g. by the use of internal combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0217—Controlling by changing the air or fuel supply for mixture compressing engines using liquid fuel
    • F02D2700/0225—Control of air or mixture supply
    • F02D2700/0246—Control of air or mixture supply for engines with compressor
    • F02D2700/0248—Control of air or mixture supply for engines with compressor by means of throttle devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • Y10T137/7768—Pilot controls supply to pressure chamber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

An air control system for an apparatus displacing material by combustive explosions insuring that the air valve leading to the combustion chamber is closed during combustion. An air supply system for a combustive apparatus for displacing material in which the charging pressure of the air in the combustion chamber may be selected and controlled. An air control system for controlling the air inlet valve to the combustion chamber of an explosive material displacing apparatus having a relief valve with means for adjusting the pressure at which the relief valve opens with a control valve connected to and responsive to the relief valve and an air control line connected to the air supply in which the flow of air therethrough is controlled by the control valve, and a piston connected to the air inlet valve and exposed on one side to the pressure in the air control line whereby pressure passing through the control line acts on the piston in a direction to close the valve, and air bleed means connected to the air control line for relieving the air control line to allow the air inlet valve to be actuated. The air control system controlling the air supply valve to allow the full air supply pressure to be built up before charging the combustion chamber with air thereby allowing the air supply system to charge air to the combustion chamber at a higher charging rate.

Claims (9)

1. In an apparatus for displacing material having a combustion chamber, a fuel inlet, air supply for supplying air to an air inlet therein, an ignition circuit for creating an explosion therein, and an outlet for directing the explosive forces against the material to be displaced, the improvement in a control system for controlling the admission of air into the combustion chamber comprising, an air inlet valve between the combustion chamber and the air supply controlling the admission of air into the chamber, a relief valve, means for adjusting the pressure at which the relief valve opens, a control valve connected to and responsive to the relief valve, an air control line in communication with the air supply and the flow of air therethrough controlled by the control valve, a piston connected to the air inlet valve and exposed on one side to the pressure in the air control line whereby any pressure exerted thereon acts in a direction to close said inlet valve, and air bleed means connected to the air control line downstream from the control valve bleeding said line.
2. The apparatus of claim 1 wherein the means for adjusting the pressure at which the relief valve opens includes, a beam one end of which engages and controls the relief valve, a spring yieldably acting against the other end of the beam, and a cam movable along the beam for varying the force of the beam acting on the valve.
3. The apparatus of claim 1 wherein the control valve includes a piston the first side of which is larger than the second side, and the first side being in communication with the relief valve, the second side being in communication with the pressure in the air control line and an orifice communicating between the first and second sides of said piston.
4. The apparatus of claim 3 including, a spring acting against the first side of said piston in a direction to close said valve.
5. The apparatus of claim 1 wherein the air bleed means includes, a solenoid actuated valve.
6. The apparatus of claim 1 including, an electrical switch in said ignition circuit and positioned to be actuated by said air inlet valve when the valve is in the closed position.
7. The apparatus of claim 3 including, an electrical switch in said ignition circuit and positioned to be actuated by said air inlet valve when the valve is in the closed position.
8. The apparatus of claim 7 wherein the air bleed means includes, a solenoid actuated valve.
9. The apparatus of claim 1 wherein the air bleed means includes, a bleed orifice.
US3600116D 1969-08-01 1969-08-01 Air-control system for apparatus displacing material by combustive explosions Expired - Lifetime US3600116A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84668269A 1969-08-01 1969-08-01

Publications (1)

Publication Number Publication Date
US3600116A true US3600116A (en) 1971-08-17

Family

ID=25298638

Family Applications (1)

Application Number Title Priority Date Filing Date
US3600116D Expired - Lifetime US3600116A (en) 1969-08-01 1969-08-01 Air-control system for apparatus displacing material by combustive explosions

Country Status (1)

Country Link
US (1) US3600116A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756763A (en) * 1969-10-27 1973-09-04 Pulsepower Systems Pulsed high pressure liquid propellant combustion powered gas generators
US3808699A (en) * 1971-09-10 1974-05-07 J Graffman Drying method and apparatus therefor
US3857240A (en) * 1972-02-28 1974-12-31 T Mcintyre Prime movers
US3887237A (en) * 1973-06-07 1975-06-03 Caterpillar Tractor Co Ripper with repetitive explosive device for rock breaking
US3924897A (en) * 1973-12-21 1975-12-09 Southwest Res Inst Earth ripper employing repetitive explosions
US4113315A (en) * 1973-12-21 1978-09-12 Southwest Research Institute Combustion apparatus for generating repetitive explosions
US4817529A (en) * 1986-06-17 1989-04-04 Jacob Schippers Process and apparatus for automatically positioning an explosive charge above the surface of snow
US5107765A (en) * 1988-03-03 1992-04-28 Jacob Schippers Process and device for triggering an avalanche
US20180038676A1 (en) * 2016-08-07 2018-02-08 Explosive Alternatives LLC Apparatus and method for blasting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731778A (en) * 1918-11-18 1929-10-15 Holzwarth Gas Turbine Co Valve for gas turbines
US2277226A (en) * 1940-07-01 1942-03-24 Hansen Archie Engine
US2634804A (en) * 1951-10-10 1953-04-14 Henry L Erickson Apparatus for generating heat
US3267986A (en) * 1962-05-18 1966-08-23 Olsson Karl Borje Apparatus for pulsating combustion
US3461577A (en) * 1965-12-15 1969-08-19 Southwest Res Inst Method of and an apparatus for displacing materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1731778A (en) * 1918-11-18 1929-10-15 Holzwarth Gas Turbine Co Valve for gas turbines
US2277226A (en) * 1940-07-01 1942-03-24 Hansen Archie Engine
US2634804A (en) * 1951-10-10 1953-04-14 Henry L Erickson Apparatus for generating heat
US3267986A (en) * 1962-05-18 1966-08-23 Olsson Karl Borje Apparatus for pulsating combustion
US3461577A (en) * 1965-12-15 1969-08-19 Southwest Res Inst Method of and an apparatus for displacing materials

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756763A (en) * 1969-10-27 1973-09-04 Pulsepower Systems Pulsed high pressure liquid propellant combustion powered gas generators
US3808699A (en) * 1971-09-10 1974-05-07 J Graffman Drying method and apparatus therefor
US3857240A (en) * 1972-02-28 1974-12-31 T Mcintyre Prime movers
US3887237A (en) * 1973-06-07 1975-06-03 Caterpillar Tractor Co Ripper with repetitive explosive device for rock breaking
US3924897A (en) * 1973-12-21 1975-12-09 Southwest Res Inst Earth ripper employing repetitive explosions
US4113315A (en) * 1973-12-21 1978-09-12 Southwest Research Institute Combustion apparatus for generating repetitive explosions
US4817529A (en) * 1986-06-17 1989-04-04 Jacob Schippers Process and apparatus for automatically positioning an explosive charge above the surface of snow
US5107765A (en) * 1988-03-03 1992-04-28 Jacob Schippers Process and device for triggering an avalanche
US20180038676A1 (en) * 2016-08-07 2018-02-08 Explosive Alternatives LLC Apparatus and method for blasting
WO2018031430A1 (en) * 2016-08-07 2018-02-15 Ahrens Brandon Apparatus and method for blasting
CN109564080A (en) * 2016-08-07 2019-04-02 布兰登·阿伦斯 Device and method for explosion
US11333474B2 (en) * 2016-08-07 2022-05-17 Explosive Alternatives, Inc. Apparatus and method for blasting

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